22142939939 has 2 divisors, whose sum is σ = 22142939940. Its totient is φ = 22142939938.

The previous prime is 22142939893. The next prime is 22142939971. The reversal of 22142939939 is 93993924122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22142939939 is a prime.

It is a super-2 number, since 2×22142939939² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22142939989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071469969 + 11071469970.

It is an arithmetic number, because the mean of its divisors is an integer number (11071469970).

Almost surely, 2^22142939939 is an apocalyptic number.

22142939939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22142939939 is an equidigital number, since it uses as much as digits as its factorization.

22142939939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 53.

The spelling of 22142939939 in words is "twenty-two billion, one hundred forty-two million, nine hundred thirty-nine thousand, nine hundred thirty-nine".