23213011211220 has 24 divisors (see below), whose sum is σ = 64996431391584. Its totient is φ = 6190136322976.

The previous prime is 23213011211183. The next prime is 23213011211231. The reversal of 23213011211220 is 2211211031232.

It is a super-2 number, since 2×23213011211220² (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 7 ways as a sum of consecutive naturals, for example, 193441760034 + ... + 193441760153.

It is an arithmetic number, because the mean of its divisors is an integer number (2708184641316).

Almost surely, 2^{23213011211220} is an apocalyptic number.

23213011211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23213011211220 is an abundant number, since it is smaller than the sum of its proper divisors (41783420180364).

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

23213011211220 is a wasteful number, since it uses less digits than its factorization.

23213011211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386883520199 (or 386883520197 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 23213011211220 its reverse (2211211031232), we get a palindrome (25424222242452).

The spelling of 23213011211220 in words is "twenty-three trillion, two hundred thirteen billion, eleven million, two hundred eleven thousand, two hundred twenty".