22131040291 has 2 divisors, whose sum is σ = 22131040292. Its totient is φ = 22131040290.

The previous prime is 22131040199. The next prime is 22131040333. The reversal of 22131040291 is 19204013122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131040291 - 2²¹ = 22128943139 is a prime.

It is not a weakly prime, because it can be changed into another prime (22131080291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065520145 + 11065520146.

It is an arithmetic number, because the mean of its divisors is an integer number (11065520146).

Almost surely, 2^22131040291 is an apocalyptic number.

22131040291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131040291 is an equidigital number, since it uses as much as digits as its factorization.

22131040291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 22131040291 in words is "twenty-two billion, one hundred thirty-one million, forty thousand, two hundred ninety-one".