22100221291 has 2 divisors, whose sum is σ = 22100221292. Its totient is φ = 22100221290.

The previous prime is 22100221259. The next prime is 22100221309. The reversal of 22100221291 is 19212200122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22100221291 - 2⁵ = 22100221259 is a prime.

It is a super-2 number, since 2×22100221291² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22100221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050110645 + 11050110646.

It is an arithmetic number, because the mean of its divisors is an integer number (11050110646).

Almost surely, 2^22100221291 is an apocalyptic number.

22100221291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100221291 is an equidigital number, since it uses as much as digits as its factorization.

22100221291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 22100221291 in words is "twenty-two billion, one hundred million, two hundred twenty-one thousand, two hundred ninety-one".