121155465 has 16 divisors (see below), whose sum is σ = 196580736. Its totient is φ = 63705600.

The previous prime is 121155449. The next prime is 121155493. The reversal of 121155465 is 564551121.

It is not a de Polignac number, because 121155465 - 2⁴ = 121155449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55816 + ... + 57945.

It is an arithmetic number, because the mean of its divisors is an integer number (12286296).

Almost surely, 2^121155465 is an apocalyptic number.

121155465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121155465 is a deficient number, since it is larger than the sum of its proper divisors (75425271).

121155465 is a wasteful number, since it uses less digits than its factorization.

121155465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113840.

The product of its digits is 6000, while the sum is 30.

The square root of 121155465 is about 11007.0643225158. The cubic root of 121155465 is about 494.8204838283.

The spelling of 121155465 in words is "one hundred twenty-one million, one hundred fifty-five thousand, four hundred sixty-five".