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2021100020010 = 2325126227177907
BaseRepresentation
bin11101011010010010111…
…100101110000100101010
321011012210221020220222200
4131122102330232010222
5231103203101120020
64144251443401030
7266006512500261
oct35322274560452
97135727226880
102021100020010
1170a1642a9155
12287852383176
13118786ac8b06
146db70cbb5d8
15378905d5590
hex1d692f2e12a

2021100020010 has 48 divisors (see below), whose sum is σ = 5254931219616. Its totient is φ = 538952706144.

The previous prime is 2021100019979. The next prime is 2021100020077. The reversal of 2021100020010 is 100200011202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2021100019974 and 2021100020001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11271477 + ... + 11449383.

It is an arithmetic number, because the mean of its divisors is an integer number (109477733742).

Almost surely, 22021100020010 is an apocalyptic number.

2021100020010 is an abundant number, since it is smaller than the sum of its proper divisors (3233831199606).

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

2021100020010 is a wasteful number, since it uses less digits than its factorization.

2021100020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304147 (or 304144 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2021100020010 its reverse (100200011202), we get a palindrome (2121300031212).

The spelling of 2021100020010 in words is "two trillion, twenty-one billion, one hundred million, twenty thousand, ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 126227 177907 252454 355814 378681 533721 631135 757362 889535 1067442 1136043 1262270 1601163 1779070 1893405 2272086 2668605 3202326 3786810 5337210 5680215 8005815 11360430 16011630 22456666889 44913333778 67370000667 112283334445 134740001334 202110002001 224566668890 336850003335 404220004002 673700006670 1010550010005 2021100020010