23220000012 has 48 divisors (see below), whose sum is σ = 59315889024. Its totient is φ = 7011312000.

The previous prime is 23219999981. The next prime is 23220000017. The reversal of 23220000012 is 21000002232.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (23220000017) 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, 275914 + ... + 350097.

It is an arithmetic number, because the mean of its divisors is an integer number (1235747688).

Almost surely, 2^23220000012 is an apocalyptic number.

23220000012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23220000012 is an abundant number, since it is smaller than the sum of its proper divisors (36095889012).

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

23220000012 is a wasteful number, since it uses less digits than its factorization.

23220000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626310 (or 626308 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 23220000012 its reverse (21000002232), we get a palindrome (44220002244).

The spelling of 23220000012 in words is "twenty-three billion, two hundred twenty million, twelve", and thus it is an aban number.