22115279 has 2 divisors, whose sum is σ = 22115280. Its totient is φ = 22115278.

The previous prime is 22115251. The next prime is 22115281. The reversal of 22115279 is 97251122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22115279 - 2¹² = 22111183 is a prime.

It is a Sophie Germain prime.

Together with 22115281, 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 (22115209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11057639 + 11057640.

It is an arithmetic number, because the mean of its divisors is an integer number (11057640).

Almost surely, 2^22115279 is an apocalyptic number.

22115279 is a deficient number, since it is larger than the sum of its proper divisors (1).

22115279 is an equidigital number, since it uses as much as digits as its factorization.

22115279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 22115279 is about 4702.6884863873. The cubic root of 22115279 is about 280.6924993259.

The spelling of 22115279 in words is "twenty-two million, one hundred fifteen thousand, two hundred seventy-nine".