121914165 has 32 divisors (see below), whose sum is σ = 211968000. Its totient is φ = 59607360.

The previous prime is 121914113. The next prime is 121914187. The reversal of 121914165 is 561419121.

It is not a de Polignac number, because 121914165 - 2⁶ = 121914101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1936 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (6624000).

Almost surely, 2^121914165 is an apocalyptic number.

121914165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121914165 is a deficient number, since it is larger than the sum of its proper divisors (90053835).

121914165 is a wasteful number, since it uses less digits than its factorization.

121914165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13857.

The product of its digits is 2160, while the sum is 30.

The square root of 121914165 is about 11041.4747656280. The cubic root of 121914165 is about 495.8512238600.

The spelling of 121914165 in words is "one hundred twenty-one million, nine hundred fourteen thousand, one hundred sixty-five".