22031304091 has 2 divisors, whose sum is σ = 22031304092. Its totient is φ = 22031304090.

The previous prime is 22031304083. The next prime is 22031304131. The reversal of 22031304091 is 19040313022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22031304091 - 2³ = 22031304083 is a prime.

It is a super-2 number, since 2×22031304091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22031304041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11015652045 + 11015652046.

It is an arithmetic number, because the mean of its divisors is an integer number (11015652046).

Almost surely, 2^22031304091 is an apocalyptic number.

22031304091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22031304091 is an equidigital number, since it uses as much as digits as its factorization.

22031304091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 22031304091 in words is "twenty-two billion, thirty-one million, three hundred four thousand, ninety-one".