121956188 has 12 divisors (see below), whose sum is σ = 213514392. Its totient is φ = 60952080.

The previous prime is 121956179. The next prime is 121956221. The reversal of 121956188 is 881659121.

It is a hoax number, since the sum of its digits (41) 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, 7298 + ... + 17238.

It is an arithmetic number, because the mean of its divisors is an integer number (17792866).

Almost surely, 2^121956188 is an apocalyptic number.

It is an amenable number.

121956188 is a deficient number, since it is larger than the sum of its proper divisors (91558204).

121956188 is a wasteful number, since it uses less digits than its factorization.

121956188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13012 (or 13010 counting only the distinct ones).

The product of its digits is 34560, while the sum is 41.

The square root of 121956188 is about 11043.3775630466. The cubic root of 121956188 is about 495.9081895191.

The spelling of 121956188 in words is "one hundred twenty-one million, nine hundred fifty-six thousand, one hundred eighty-eight".