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23101212100 = 2252431535991
BaseRepresentation
bin10101100000111100…
…001000010111000100
32012121222000011111011
4111200330020113010
5334302402241400
614340151052004
71445320030411
oct254074102704
965558004434
1023101212100
11988503962a
124588671004
132242038595
141192117108
159031538ba
hex560f085c4

23101212100 has 36 divisors (see below), whose sum is σ = 50246034048. Its totient is φ = 9219028000.

The previous prime is 23101212083. The next prime is 23101212103. The reversal of 23101212100 is 121210132.

It is not an unprimeable number, because it can be changed into a prime (23101212103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224896 + ... + 311095.

It is an arithmetic number, because the mean of its divisors is an integer number (1395723168).

Almost surely, 223101212100 is an apocalyptic number.

23101212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23101212100 is an abundant number, since it is smaller than the sum of its proper divisors (27144821948).

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

23101212100 is a wasteful number, since it uses less digits than its factorization.

23101212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536436 (or 536429 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 23101212100 its reverse (121210132), we get a palindrome (23222422232).

The spelling of 23101212100 in words is "twenty-three billion, one hundred one million, two hundred twelve thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 431 862 1724 2155 4310 8620 10775 21550 43100 535991 1071982 2143964 2679955 5359910 10719820 13399775 26799550 53599100 231012121 462024242 924048484 1155060605 2310121210 4620242420 5775303025 11550606050 23101212100