12212211112 has 16 divisors (see below), whose sum is σ = 23687478900. Its totient is φ = 5895550080.

The previous prime is 12212211101. The next prime is 12212211127. The reversal of 12212211112 is 21111221221.

It can be written as a sum of positive squares in 2 ways, for example, as 11995944676 + 216266436 = 109526^2 + 14706^2 .

It is a nude number because it is divisible by every one of its digits.

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, 26319189 + ... + 26319652.

Almost surely, 2^12212211112 is an apocalyptic number.

It is an amenable number.

12212211112 is a deficient number, since it is larger than the sum of its proper divisors (11475267788).

12212211112 is a wasteful number, since it uses less digits than its factorization.

12212211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52638876 (or 52638872 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

Adding to 12212211112 its reverse (21111221221), we get a palindrome (33323432333).

The spelling of 12212211112 in words is "twelve billion, two hundred twelve million, two hundred eleven thousand, one hundred twelve".