121120102091 has 2 divisors, whose sum is σ = 121120102092. Its totient is φ = 121120102090.

The previous prime is 121120102087. The next prime is 121120102141. The reversal of 121120102091 is 190201021121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121120102091 - 2² = 121120102087 is a prime.

It is not a weakly prime, because it can be changed into another prime (121120102001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560051045 + 60560051046.

It is an arithmetic number, because the mean of its divisors is an integer number (60560051046).

Almost surely, 2^121120102091 is an apocalyptic number.

121120102091 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120102091 is an equidigital number, since it uses as much as digits as its factorization.

121120102091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 121120102091 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred two thousand, ninety-one".