12220313664 has 56 divisors (see below), whose sum is σ = 34820067520. Its totient is φ = 3760095744.

The previous prime is 12220313659. The next prime is 12220313717. The reversal of 12220313664 is 46631302221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2445484 + ... + 2450475.

It is an arithmetic number, because the mean of its divisors is an integer number (621786920).

Almost surely, 2^12220313664 is an apocalyptic number.

It is an amenable number.

12220313664 is an abundant number, since it is smaller than the sum of its proper divisors (22599753856).

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

12220313664 is a wasteful number, since it uses less digits than its factorization.

12220313664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4895987 (or 4895977 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 12220313664 its reverse (46631302221), we get a palindrome (58851615885).

The spelling of 12220313664 in words is "twelve billion, two hundred twenty million, three hundred thirteen thousand, six hundred sixty-four".