22109913971 has 2 divisors, whose sum is σ = 22109913972. Its totient is φ = 22109913970.

The previous prime is 22109913967. The next prime is 22109914019. The reversal of 22109913971 is 17931990122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22109913971 - 2² = 22109913967 is a prime.

It is not a weakly prime, because it can be changed into another prime (22109913071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11054956985 + 11054956986.

It is an arithmetic number, because the mean of its divisors is an integer number (11054956986).

Almost surely, 2^22109913971 is an apocalyptic number.

22109913971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22109913971 is an equidigital number, since it uses as much as digits as its factorization.

22109913971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 44.

The spelling of 22109913971 in words is "twenty-two billion, one hundred nine million, nine hundred thirteen thousand, nine hundred seventy-one".