91202022211121 has 12 divisors (see below), whose sum is σ = 95646290900160. Its totient is φ = 86956212827880.

The previous prime is 91202022211093. The next prime is 91202022211151. The reversal of 91202022211121 is 12111222020219.

It is not a de Polignac number, because 91202022211121 - 2⁶ = 91202022211057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91202022211151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277013261 + ... + 277342298.

It is an arithmetic number, because the mean of its divisors is an integer number (7970524241680).

Almost surely, 2^{91202022211121} is an apocalyptic number.

It is an amenable number.

91202022211121 is a deficient number, since it is larger than the sum of its proper divisors (4444268689039).

91202022211121 is a wasteful number, since it uses less digits than its factorization.

91202022211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554355916 (or 554355893 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 91202022211121 in words is "ninety-one trillion, two hundred two billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".