23221122100 has 108 divisors (see below), whose sum is σ = 55938505644. Its totient is φ = 8360000000.

The previous prime is 23221122059. The next prime is 23221122101. The reversal of 23221122100 is 122112232.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 37405456 + 23183716644 = 6116^2 + 152262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221122101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1212600 + ... + 1231600.

Almost surely, 2^23221122100 is an apocalyptic number.

23221122100 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 23221122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27969252822).

23221122100 is an abundant number, since it is smaller than the sum of its proper divisors (32717383544).

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

23221122100 is a wasteful number, since it uses less digits than its factorization.

23221122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19138 (or 19120 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23221122100 its reverse (122112232), we get a palindrome (23343234332).

The spelling of 23221122100 in words is "twenty-three billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred".