22142939971 has 2 divisors, whose sum is σ = 22142939972. Its totient is φ = 22142939970.

The previous prime is 22142939939. The next prime is 22142939989. The reversal of 22142939971 is 17993924122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22142939971 - 2⁵ = 22142939939 is a prime.

It is not a weakly prime, because it can be changed into another prime (22142939771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071469985 + 11071469986.

It is an arithmetic number, because the mean of its divisors is an integer number (11071469986).

Almost surely, 2^22142939971 is an apocalyptic number.

22142939971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22142939971 is an equidigital number, since it uses as much as digits as its factorization.

22142939971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The spelling of 22142939971 in words is "twenty-two billion, one hundred forty-two million, nine hundred thirty-nine thousand, nine hundred seventy-one".