12121964 has 12 divisors (see below), whose sum is σ = 21242088. Its totient is φ = 6052800.

The previous prime is 12121957. The next prime is 12121973. The reversal of 12121964 is 46912121.

It is a super-2 number, since 2×12121964² = 293884022434592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 2324 + ... + 5444.

It is an arithmetic number, because the mean of its divisors is an integer number (1770174).

Almost surely, 2^12121964 is an apocalyptic number.

It is an amenable number.

12121964 is a deficient number, since it is larger than the sum of its proper divisors (9120124).

12121964 is a wasteful number, since it uses less digits than its factorization.

12121964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096 (or 4094 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 12121964 is about 3481.6610978095. The cubic root of 12121964 is about 229.7158684229.

The spelling of 12121964 in words is "twelve million, one hundred twenty-one thousand, nine hundred sixty-four".