22127879 has 2 divisors, whose sum is σ = 22127880. Its totient is φ = 22127878.

The previous prime is 22127873. The next prime is 22127881. The reversal of 22127879 is 97872122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22127879 is a prime.

It is a Sophie Germain prime.

Together with 22127881, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 22127879 parts by 6652 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22127873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11063939 + 11063940.

It is an arithmetic number, because the mean of its divisors is an integer number (11063940).

Almost surely, 2^22127879 is an apocalyptic number.

22127879 is a deficient number, since it is larger than the sum of its proper divisors (1).

22127879 is an equidigital number, since it uses as much as digits as its factorization.

22127879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 22127879 is about 4704.0279548489. The cubic root of 22127879 is about 280.7457966266.

The spelling of 22127879 in words is "twenty-two million, one hundred twenty-seven thousand, eight hundred seventy-nine".