12220225512 has 32 divisors (see below), whose sum is σ = 33327888480. Its totient is φ = 3703098560.

The previous prime is 12220225489. The next prime is 12220225517. The reversal of 12220225512 is 21552202221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12220225517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23144103 + ... + 23144630.

It is an arithmetic number, because the mean of its divisors is an integer number (1041496515).

Almost surely, 2^12220225512 is an apocalyptic number.

12220225512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12220225512 is an abundant number, since it is smaller than the sum of its proper divisors (21107662968).

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

12220225512 is a wasteful number, since it uses less digits than its factorization.

12220225512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46288753 (or 46288749 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 12220225512 its reverse (21552202221), we get a palindrome (33772427733).

It can be divided in two parts, 12220 and 225512, that added together give a palindrome (237732).

The spelling of 12220225512 in words is "twelve billion, two hundred twenty million, two hundred twenty-five thousand, five hundred twelve".