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212100123122103 = 3615051812294261
BaseRepresentation
bin110000001110011101101000…
…011111101101100110110111
31000210222120111021000202101110
4300032131220133231212313
5210300022023004401403
62031033241301330103
762450504526662226
oct6016355037554667
91023876437022343
10212100123122103
1161644180077757
121b956512106933
139146c56b391c8
143a539b4b52cbd
15197c326e1a103
hexc0e7687ed9b7

212100123122103 has 16 divisors (see below), whose sum is σ = 287436926689632. Its totient is φ = 139081712016000.

The previous prime is 212100123122101. The next prime is 212100123122123. The reversal of 212100123122103 is 301221321001212.

It is not a de Polignac number, because 212100123122103 - 21 = 212100123122101 is a prime.

It is a super-2 number, since 2×2121001231221032 (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212100123122103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100123122101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91300993 + ... + 93595253.

It is an arithmetic number, because the mean of its divisors is an integer number (17964807918102).

Almost surely, 2212100123122103 is an apocalyptic number.

212100123122103 is a deficient number, since it is larger than the sum of its proper divisors (75336803567529).

212100123122103 is a wasteful number, since it uses less digits than its factorization.

212100123122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799506.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 212100123122103 its reverse (301221321001212), we get a palindrome (513321444123315).

The spelling of 212100123122103 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred three".

Divisors: 1 3 61 183 505181 1515543 2294261 6882783 30816041 92448123 139949921 419849763 1159017066241 3477051198723 70700041040701 212100123122103