23111220200 has 24 divisors (see below), whose sum is σ = 53733587430. Its totient is φ = 9244488000.

The previous prime is 23111220179. The next prime is 23111220221. The reversal of 23111220200 is 202211132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23111220179) and next prime (23111220221).

It can be written as a sum of positive squares in 3 ways, for example, as 15673537636 + 7437682564 = 125194^2 + 86242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57777851 + ... + 57778250.

Almost surely, 2^23111220200 is an apocalyptic number.

23111220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111220200 is an abundant number, since it is smaller than the sum of its proper divisors (30622367230).

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

23111220200 is a wasteful number, since it uses less digits than its factorization.

23111220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115556117 (or 115556108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 23111220200 its reverse (202211132), we get a palindrome (23313431332).

The spelling of 23111220200 in words is "twenty-three billion, one hundred eleven million, two hundred twenty thousand, two hundred".