121900959 has 18 divisors (see below), whose sum is σ = 182034528. Its totient is φ = 78526800.

The previous prime is 121900937. The next prime is 121900973. The reversal of 121900959 is 959009121.

It is not a de Polignac number, because 121900959 - 2¹¹ = 121898911 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121900859) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 184089 + ... + 184749.

Almost surely, 2^121900959 is an apocalyptic number.

121900959 is a deficient number, since it is larger than the sum of its proper divisors (60133569).

121900959 is an frugal number, since it uses more digits than its factorization.

121900959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 121900959 is about 11040.8767314919. The cubic root of 121900959 is about 495.8333193293.

The spelling of 121900959 in words is "one hundred twenty-one million, nine hundred thousand, nine hundred fifty-nine".