202112112091 has 2 divisors, whose sum is σ = 202112112092. Its totient is φ = 202112112090.

The previous prime is 202112111983. The next prime is 202112112179. The reversal of 202112112091 is 190211211202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202112112091 - 2³⁷ = 64673158619 is a prime.

It is not a weakly prime, because it can be changed into another prime (202112112691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056056045 + 101056056046.

It is an arithmetic number, because the mean of its divisors is an integer number (101056056046).

Almost surely, 2^202112112091 is an apocalyptic number.

202112112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112112091 is an equidigital number, since it uses as much as digits as its factorization.

202112112091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 202112112091 its reverse (190211211202), we get a palindrome (392323323293).

The spelling of 202112112091 in words is "two hundred two billion, one hundred twelve million, one hundred twelve thousand, ninety-one".