121055165 has 32 divisors (see below), whose sum is σ = 185552640. Its totient is φ = 73612800.

The previous prime is 121055161. The next prime is 121055167. The reversal of 121055165 is 561550121.

It is not a de Polignac number, because 121055165 - 2² = 121055161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121055161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11951 + ... + 19619.

It is an arithmetic number, because the mean of its divisors is an integer number (5798520).

Almost surely, 2^121055165 is an apocalyptic number.

It is an amenable number.

121055165 is a deficient number, since it is larger than the sum of its proper divisors (64497475).

121055165 is a wasteful number, since it uses less digits than its factorization.

121055165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 121055165 is about 11002.5072142671. The cubic root of 121055165 is about 494.6838984459.

The spelling of 121055165 in words is "one hundred twenty-one million, fifty-five thousand, one hundred sixty-five".