12211210112 has 32 divisors (see below), whose sum is σ = 24600380400. Its totient is φ = 6036997120.

The previous prime is 12211210103. The next prime is 12211210181. The reversal of 12211210112 is 21101211221.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×12211210112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 524564 + ... + 547347.

Almost surely, 2^12211210112 is an apocalyptic number.

It is an amenable number.

12211210112 is an abundant number, since it is smaller than the sum of its proper divisors (12389170288).

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

12211210112 is an equidigital number, since it uses as much as digits as its factorization.

12211210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072014 (or 1072002 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12211210112 its reverse (21101211221), we get a palindrome (33312421333).

The spelling of 12211210112 in words is "twelve billion, two hundred eleven million, two hundred ten thousand, one hundred twelve".