23120030220 has 96 divisors (see below), whose sum is σ = 74397657600. Its totient is φ = 5255038464.

The previous prime is 23120030173. The next prime is 23120030249. The reversal of 23120030220 is 2203002132.

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 23120030220.

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, 78585 + ... + 228944.

It is an arithmetic number, because the mean of its divisors is an integer number (774975600).

Almost surely, 2^23120030220 is an apocalyptic number.

23120030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23120030220 is an abundant number, since it is smaller than the sum of its proper divisors (51277627380).

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

23120030220 is a wasteful number, since it uses less digits than its factorization.

23120030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307727 (or 307725 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 23120030220 its reverse (2203002132), we get a palindrome (25323032352).

The spelling of 23120030220 in words is "twenty-three billion, one hundred twenty million, thirty thousand, two hundred twenty".