12211912 has 16 divisors (see below), whose sum is σ = 23134860. Its totient is φ = 6042624.

The previous prime is 12211909. The next prime is 12211937. The reversal of 12211912 is 21911221.

It is a happy number.

12211912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11655396 + 556516 = 3414^2 + 746^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12211912.

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, 7093 + ... + 8644.

Almost surely, 2^12211912 is an apocalyptic number.

It is an amenable number.

12211912 is a deficient number, since it is larger than the sum of its proper divisors (10922948).

12211912 is a wasteful number, since it uses less digits than its factorization.

12211912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15840 (or 15836 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

The square root of 12211912 is about 3494.5546211213. The cubic root of 12211912 is about 230.2826518707.

The spelling of 12211912 in words is "twelve million, two hundred eleven thousand, nine hundred twelve".