121817065 has 16 divisors (see below), whose sum is σ = 150264576. Its totient is φ = 94752000.

The previous prime is 121817057. The next prime is 121817083. The reversal of 121817065 is 560718121.

It is not a de Polignac number, because 121817065 - 2³ = 121817057 is a prime.

It is a Duffinian number.

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, 50640 + ... + 52990.

It is an arithmetic number, because the mean of its divisors is an integer number (9391536).

Almost surely, 2^121817065 is an apocalyptic number.

It is an amenable number.

121817065 is a deficient number, since it is larger than the sum of its proper divisors (28447511).

121817065 is a wasteful number, since it uses less digits than its factorization.

121817065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 121817065 is about 11037.0768322052. The cubic root of 121817065 is about 495.7195466756.

The spelling of 121817065 in words is "one hundred twenty-one million, eight hundred seventeen thousand, sixty-five".