12111964 has 12 divisors (see below), whose sum is σ = 21464800. Its totient is φ = 5979168.

The previous prime is 12111929. The next prime is 12111989. The reversal of 12111964 is 46911121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18849 + ... + 19480.

Almost surely, 2^12111964 is an apocalyptic number.

It is an amenable number.

12111964 is a deficient number, since it is larger than the sum of its proper divisors (9352836).

12111964 is a wasteful number, since it uses less digits than its factorization.

12111964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38412 (or 38410 counting only the distinct ones).

The product of its digits is 432, while the sum is 25.

The square root of 12111964 is about 3480.2247053890. The cubic root of 12111964 is about 229.6526830993.

The spelling of 12111964 in words is "twelve million, one hundred eleven thousand, nine hundred sixty-four".