22368881 has 2 divisors, whose sum is σ = 22368882. Its totient is φ = 22368880.

The previous prime is 22368859. The next prime is 22368911. The reversal of 22368881 is 18886322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21939856 + 429025 = 4684^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 22368881 - 2¹⁸ = 22106737 is a prime.

It is a super-2 number, since 2×22368881² = 1000733674384322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22368781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11184440 + 11184441.

It is an arithmetic number, because the mean of its divisors is an integer number (11184441).

Almost surely, 2^22368881 is an apocalyptic number.

It is an amenable number.

22368881 is a deficient number, since it is larger than the sum of its proper divisors (1).

22368881 is an equidigital number, since it uses as much as digits as its factorization.

22368881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 22368881 is about 4729.5751394813. The cubic root of 22368881 is about 281.7613501615.

The spelling of 22368881 in words is "twenty-two million, three hundred sixty-eight thousand, eight hundred eighty-one".