23111220100 has 36 divisors (see below), whose sum is σ = 50168015604. Its totient is φ = 9241415680.

The previous prime is 23111220079. The next prime is 23111220103. The reversal of 23111220100 is 102211132.

It can be written as a sum of positive squares in 6 ways, for example, as 4676097924 + 18435122176 = 68382^2 + 135776^2 .

It is not an unprimeable number, because it can be changed into a prime (23111220103) 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, 276864 + ... + 350536.

It is an arithmetic number, because the mean of its divisors is an integer number (1393555989).

Almost surely, 2^23111220100 is an apocalyptic number.

23111220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111220100 is an abundant number, since it is smaller than the sum of its proper divisors (27056795504).

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

23111220100 is a wasteful number, since it uses less digits than its factorization.

23111220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76824 (or 76817 counting only the distinct ones).

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

Adding to 23111220100 its reverse (102211132), we get a palindrome (23213431232).

The spelling of 23111220100 in words is "twenty-three billion, one hundred eleven million, two hundred twenty thousand, one hundred".