22191079 has 2 divisors, whose sum is σ = 22191080. Its totient is φ = 22191078.

The previous prime is 22191077. The next prime is 22191101. The reversal of 22191079 is 97019122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22191079 - 2¹ = 22191077 is a prime.

Together with 22191077, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22191079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22191073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11095539 + 11095540.

It is an arithmetic number, because the mean of its divisors is an integer number (11095540).

Almost surely, 2^22191079 is an apocalyptic number.

22191079 is a deficient number, since it is larger than the sum of its proper divisors (1).

22191079 is an equidigital number, since it uses as much as digits as its factorization.

22191079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 22191079 is about 4710.7408122290. The cubic root of 22191079 is about 281.0128243114.

The spelling of 22191079 in words is "twenty-two million, one hundred ninety-one thousand, seventy-nine".