22281379 has 2 divisors, whose sum is σ = 22281380. Its totient is φ = 22281378.

The previous prime is 22281377. The next prime is 22281401. The reversal of 22281379 is 97318222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22281379 - 2¹ = 22281377 is a prime.

Together with 22281377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22281377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11140689 + 11140690.

It is an arithmetic number, because the mean of its divisors is an integer number (11140690).

Almost surely, 2^22281379 is an apocalyptic number.

22281379 is a deficient number, since it is larger than the sum of its proper divisors (1).

22281379 is an equidigital number, since it uses as much as digits as its factorization.

22281379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 22281379 is about 4720.3155614853. The cubic root of 22281379 is about 281.3934745168.

The spelling of 22281379 in words is "twenty-two million, two hundred eighty-one thousand, three hundred seventy-nine".