23111133100 has 108 divisors (see below), whose sum is σ = 55673561664. Its totient is φ = 8320400000.

The previous prime is 23111133043. The next prime is 23111133109. The reversal of 23111133100 is 133111132.

It is a super-2 number, since 2×23111133100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23111133109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1212645 + ... + 1231555.

Almost surely, 2^23111133100 is an apocalyptic number.

23111133100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23111133100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27836780832).

23111133100 is an abundant number, since it is smaller than the sum of its proper divisors (32562428564).

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

23111133100 is a wasteful number, since it uses less digits than its factorization.

23111133100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048 (or 19030 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 23111133100 its reverse (133111132), we get a palindrome (23244244232).

The spelling of 23111133100 in words is "twenty-three billion, one hundred eleven million, one hundred thirty-three thousand, one hundred".