121370565 has 32 divisors (see below), whose sum is σ = 207657216. Its totient is φ = 60318720.

The previous prime is 121370533. The next prime is 121370573. The reversal of 121370565 is 565073121.

It is not a de Polignac number, because 121370565 - 2⁵ = 121370533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23955 + ... + 28575.

It is an arithmetic number, because the mean of its divisors is an integer number (6489288).

Almost surely, 2^121370565 is an apocalyptic number.

121370565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121370565 is a deficient number, since it is larger than the sum of its proper divisors (86286651).

121370565 is a wasteful number, since it uses less digits than its factorization.

121370565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 121370565 is about 11016.8309871759. The cubic root of 121370565 is about 495.1131462605.

The spelling of 121370565 in words is "one hundred twenty-one million, three hundred seventy thousand, five hundred sixty-five".