23210011220 has 96 divisors (see below), whose sum is σ = 54338376960. Its totient is φ = 8255836160.

The previous prime is 23210011213. The next prime is 23210011249. The reversal of 23210011220 is 2211001232.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23210011195 and 23210011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4113161 + ... + 4118799.

It is an arithmetic number, because the mean of its divisors is an integer number (566024760).

Almost surely, 2^23210011220 is an apocalyptic number.

23210011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23210011220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27169188480).

23210011220 is an abundant number, since it is smaller than the sum of its proper divisors (31128365740).

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

23210011220 is a wasteful number, since it uses less digits than its factorization.

23210011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065 (or 6063 counting only the distinct ones).

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

Adding to 23210011220 its reverse (2211001232), we get a palindrome (25421012452).

The spelling of 23210011220 in words is "twenty-three billion, two hundred ten million, eleven thousand, two hundred twenty".