23201320220220 has 48 divisors (see below), whose sum is σ = 65004375467808. Its totient is φ = 6183144549120.

The previous prime is 23201320220209. The next prime is 23201320220279. The reversal of 23201320220220 is 2202202310232.

It is a super-2 number, since 2×23201320220220² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120971391 + ... + 121163030.

It is an arithmetic number, because the mean of its divisors is an integer number (1354257822246).

Almost surely, 2^{23201320220220} is an apocalyptic number.

23201320220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23201320220220 is an abundant number, since it is smaller than the sum of its proper divisors (41803055247588).

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

23201320220220 is a wasteful number, since it uses less digits than its factorization.

23201320220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242136030 (or 242136028 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23201320220220 its reverse (2202202310232), we get a palindrome (25403522530452).

The spelling of 23201320220220 in words is "twenty-three trillion, two hundred one billion, three hundred twenty million, two hundred twenty thousand, two hundred twenty".