121056791 has 2 divisors, whose sum is σ = 121056792. Its totient is φ = 121056790.

The previous prime is 121056763. The next prime is 121056833. The reversal of 121056791 is 197650121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121056791 - 2¹⁴ = 121040407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121056721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60528395 + 60528396.

It is an arithmetic number, because the mean of its divisors is an integer number (60528396).

Almost surely, 2^121056791 is an apocalyptic number.

121056791 is a deficient number, since it is larger than the sum of its proper divisors (1).

121056791 is an equidigital number, since it uses as much as digits as its factorization.

121056791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 121056791 is about 11002.5811062677. The cubic root of 121056791 is about 494.6861132830.

The spelling of 121056791 in words is "one hundred twenty-one million, fifty-six thousand, seven hundred ninety-one".