12220331312 has 20 divisors (see below), whose sum is σ = 27059305296. Its totient is φ = 5237284800.

The previous prime is 12220331231. The next prime is 12220331351. The reversal of 12220331312 is 21313302221.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54554939 + ... + 54555162.

Almost surely, 2^12220331312 is an apocalyptic number.

It is an amenable number.

12220331312 is an abundant number, since it is smaller than the sum of its proper divisors (14838973984).

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

12220331312 is a wasteful number, since it uses less digits than its factorization.

12220331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109110116 (or 109110110 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12220331312 its reverse (21313302221), we get a palindrome (33533633533).

The spelling of 12220331312 in words is "twelve billion, two hundred twenty million, three hundred thirty-one thousand, three hundred twelve".