23210222220 has 48 divisors (see below), whose sum is σ = 72209581920. Its totient is φ = 6189392448.

The previous prime is 23210222219. The next prime is 23210222227. The reversal of 23210222220 is 2222201232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23210222193 and 23210222202.

It is not an unprimeable number, because it can be changed into a prime (23210222227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21490407 + ... + 21491486.

It is an arithmetic number, because the mean of its divisors is an integer number (1504366290).

Almost surely, 2^23210222220 is an apocalyptic number.

23210222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23210222220 is an abundant number, since it is smaller than the sum of its proper divisors (48999359700).

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

23210222220 is a wasteful number, since it uses less digits than its factorization.

23210222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42981911 (or 42981903 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 23210222220 its reverse (2222201232), we get a palindrome (25432423452).

The spelling of 23210222220 in words is "twenty-three billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty".