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201212120100 = 22352670707067
BaseRepresentation
bin1011101101100100101…
…1010100110000100100
3201020100211002202200110
42323121023110300210
511244040300320400
6232234030013020
720352136541565
oct2733113246044
9636324082613
10201212120100
1178373aa5a52
1232bb5647170
1315c884981c4
149a4b08816c
155379aa5e50
hex2ed92d4c24

201212120100 has 36 divisors (see below), whose sum is σ = 582173735024. Its totient is φ = 53656565280.

The previous prime is 201212120093. The next prime is 201212120111. The reversal of 201212120100 is 1021212102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335353234 + ... + 335353833.

Almost surely, 2201212120100 is an apocalyptic number.

201212120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212120100 is an abundant number, since it is smaller than the sum of its proper divisors (380961614924).

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

201212120100 is a wasteful number, since it uses less digits than its factorization.

201212120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670707084 (or 670707077 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201212120100 its reverse (1021212102), we get a palindrome (202233332202).

The spelling of 201212120100 in words is "two hundred one billion, two hundred twelve million, one hundred twenty thousand, one hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 670707067 1341414134 2012121201 2682828268 3353535335 4024242402 6707070670 8048484804 10060606005 13414141340 16767676675 20121212010 33535353350 40242424020 50303030025 67070706700 100606060050 201212120100