2222312120991 has 10 divisors (see below), whose sum is σ = 3319750205552. Its totient is φ = 1481541413940.

The previous prime is 2222312120971. The next prime is 2222312120993. The reversal of 2222312120991 is 1990212132222.

2222312120991 is a `hidden beast` number, since 22 + 223 + 121 + 209 + 91 = 666.

It is not a de Polignac number, because 2222312120991 - 2²⁵ = 2222278566559 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 (2222312120993) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13717975975 + ... + 13717976136.

Almost surely, 2^{2222312120991} is an apocalyptic number.

2222312120991 is a deficient number, since it is larger than the sum of its proper divisors (1097438084561).

2222312120991 is an equidigital number, since it uses as much as digits as its factorization.

2222312120991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27435952123 (or 27435952114 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 2222312120991 in words is "two trillion, two hundred twenty-two billion, three hundred twelve million, one hundred twenty thousand, nine hundred ninety-one".