22139567 has 2 divisors, whose sum is σ = 22139568. Its totient is φ = 22139566.

The previous prime is 22139563. The next prime is 22139569. The reversal of 22139567 is 76593122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22139567 - 2² = 22139563 is a prime.

Together with 22139569, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22139561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11069783 + 11069784.

It is an arithmetic number, because the mean of its divisors is an integer number (11069784).

Almost surely, 2^22139567 is an apocalyptic number.

22139567 is a deficient number, since it is larger than the sum of its proper divisors (1).

22139567 is an equidigital number, since it uses as much as digits as its factorization.

22139567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 22139567 is about 4705.2701303963. The cubic root of 22139567 is about 280.7952181324.

The spelling of 22139567 in words is "twenty-two million, one hundred thirty-nine thousand, five hundred sixty-seven".