121116959 has 4 divisors (see below), whose sum is σ = 128241504. Its totient is φ = 113992416.

The previous prime is 121116943. The next prime is 121116971. The reversal of 121116959 is 959611121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121116959 - 2⁴ = 121116943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121119959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3562247 + ... + 3562280.

It is an arithmetic number, because the mean of its divisors is an integer number (32060376).

Almost surely, 2^121116959 is an apocalyptic number.

121116959 is a deficient number, since it is larger than the sum of its proper divisors (7124545).

121116959 is an equidigital number, since it uses as much as digits as its factorization.

121116959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124544.

The product of its digits is 4860, while the sum is 35.

The square root of 121116959 is about 11005.3150341097. The cubic root of 121116959 is about 494.7680564878.

The spelling of 121116959 in words is "one hundred twenty-one million, one hundred sixteen thousand, nine hundred fifty-nine".