121010122091 has 4 divisors (see below), whose sum is σ = 121347198000. Its totient is φ = 120673046184.

The previous prime is 121010122061. The next prime is 121010122127. The reversal of 121010122091 is 190221010121.

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 121010122091 - 2⁶ = 121010122027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121010122061) 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, 168537416 + ... + 168538133.

It is an arithmetic number, because the mean of its divisors is an integer number (30336799500).

Almost surely, 2^121010122091 is an apocalyptic number.

121010122091 is a deficient number, since it is larger than the sum of its proper divisors (337075909).

121010122091 is an equidigital number, since it uses as much as digits as its factorization.

121010122091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337075908.

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

The spelling of 121010122091 in words is "one hundred twenty-one billion, ten million, one hundred twenty-two thousand, ninety-one".