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20210021012000 = 255325120129503
BaseRepresentation
bin1001001100001100000110…
…00111111001001000100000
32122120001121010001100022202
410212012003013321020200
510122110110334341000
6110552204441152332
74154061106123211
oct446060307711040
978501533040282
1020210021012000
116492026a94936
122324a0718b6a8
13b37a487692c1
144dc2551b1408
15250a97e68dd5
hex1261831f9220

20210021012000 has 96 divisors (see below), whose sum is σ = 49853856858624. Its totient is φ = 8051800800000.

The previous prime is 20210021011933. The next prime is 20210021012017. The reversal of 20210021012000 is 21012001202.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9060752 + ... + 11068751.

It is an arithmetic number, because the mean of its divisors is an integer number (519311008944).

Almost surely, 220210021012000 is an apocalyptic number.

20210021012000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210021012000 is an abundant number, since it is smaller than the sum of its proper divisors (29643835846624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20210021012000 is a wasteful number, since it uses less digits than its factorization.

20210021012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20129779 (or 20129761 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20210021012000 its reverse (21012001202), we get a palindrome (20231033013202).

The spelling of 20210021012000 in words is "twenty trillion, two hundred ten billion, twenty-one million, twelve thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 251 400 500 502 800 1000 1004 1255 2000 2008 2510 4000 4016 5020 6275 8032 10040 12550 20080 25100 31375 40160 50200 62750 100400 125500 200800 251000 502000 1004000 20129503 40259006 80518012 100647515 161036024 201295030 322072048 402590060 503237575 644144096 805180120 1006475150 1610360240 2012950300 2516187875 3220720480 4025900600 5032375750 5052505253 8051801200 10064751500 10105010506 16103602400 20129503000 20210021012 25262526265 40259006000 40420042024 50525052530 80518012000 80840084048 101050105060 126312631325 161680168096 202100210120 252625262650 404200420240 505250525300 631563156625 808400840480 1010501050600 1263126313250 2021002101200 2526252626500 4042004202400 5052505253000 10105010506000 20210021012000