12220420112 has 10 divisors (see below), whose sum is σ = 23677063998. Its totient is φ = 6110210048.

The previous prime is 12220420109. The next prime is 12220420123. The reversal of 12220420112 is 21102402221.

It can be written as a sum of positive squares in only one way, i.e., 12039356176 + 181063936 = 109724^2 + 13456^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381888113 + ... + 381888144.

Almost surely, 2^12220420112 is an apocalyptic number.

It is an amenable number.

12220420112 is a deficient number, since it is larger than the sum of its proper divisors (11456643886).

12220420112 is an equidigital number, since it uses as much as digits as its factorization.

12220420112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763776265 (or 763776259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12220420112 its reverse (21102402221), we get a palindrome (33322822333).

The spelling of 12220420112 in words is "twelve billion, two hundred twenty million, four hundred twenty thousand, one hundred twelve".