23011122100 has 36 divisors (see below), whose sum is σ = 49942701900. Its totient is φ = 9202869760.

The previous prime is 23011122097. The next prime is 23011122107. The reversal of 23011122100 is 122111032.

It can be written as a sum of positive squares in 6 ways, for example, as 7918508196 + 15092613904 = 88986^2 + 122852^2 .

It is a super-2 number, since 2×23011122100² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011122107) 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, 694716 + ... + 727084.

It is an arithmetic number, because the mean of its divisors is an integer number (1387297275).

Almost surely, 2^23011122100 is an apocalyptic number.

23011122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23011122100 is an abundant number, since it is smaller than the sum of its proper divisors (26931579800).

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

23011122100 is a wasteful number, since it uses less digits than its factorization.

23011122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39492 (or 39485 counting only the distinct ones).

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

Adding to 23011122100 its reverse (122111032), we get a palindrome (23133233132).

The spelling of 23011122100 in words is "twenty-three billion, eleven million, one hundred twenty-two thousand, one hundred".