23201120220 has 24 divisors (see below), whose sum is σ = 64963136784. Its totient is φ = 6186965376.

The previous prime is 23201120203. The next prime is 23201120249. The reversal of 23201120220 is 2202110232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23201120220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193342609 + ... + 193342728.

It is an arithmetic number, because the mean of its divisors is an integer number (2706797366).

Almost surely, 2^23201120220 is an apocalyptic number.

23201120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23201120220 is an abundant number, since it is smaller than the sum of its proper divisors (41762016564).

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

23201120220 is a wasteful number, since it uses less digits than its factorization.

23201120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386685349 (or 386685347 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23201120220 its reverse (2202110232), we get a palindrome (25403230452).

The spelling of 23201120220 in words is "twenty-three billion, two hundred one million, one hundred twenty thousand, two hundred twenty".