22358881 has 2 divisors, whose sum is σ = 22358882. Its totient is φ = 22358880.

The previous prime is 22358863. The next prime is 22358923. The reversal of 22358881 is 18885322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21390625 + 968256 = 4625^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 22358881 - 2¹³ = 22350689 is a prime.

It is a super-2 number, since 2×22358881² = 999839119144322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22358881.

It is not a weakly prime, because it can be changed into another prime (22358851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11179440 + 11179441.

It is an arithmetic number, because the mean of its divisors is an integer number (11179441).

Almost surely, 2^22358881 is an apocalyptic number.

It is an amenable number.

22358881 is a deficient number, since it is larger than the sum of its proper divisors (1).

22358881 is an equidigital number, since it uses as much as digits as its factorization.

22358881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 37.

The square root of 22358881 is about 4728.5178438915. The cubic root of 22358881 is about 281.7193568006.

The spelling of 22358881 in words is "twenty-two million, three hundred fifty-eight thousand, eight hundred eighty-one".