22336921 has 2 divisors, whose sum is σ = 22336922. Its totient is φ = 22336920.

The previous prime is 22336901. The next prime is 22336939. The reversal of 22336921 is 12963322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 3370896 = 4355^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 22336921 - 2¹⁷ = 22205849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22336921.

It is not a weakly prime, because it can be changed into another prime (22336901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11168460 + 11168461.

It is an arithmetic number, because the mean of its divisors is an integer number (11168461).

Almost surely, 2^22336921 is an apocalyptic number.

It is an amenable number.

22336921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22336921 is an equidigital number, since it uses as much as digits as its factorization.

22336921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 28.

The square root of 22336921 is about 4726.1951927528. The cubic root of 22336921 is about 281.6270954217.

The spelling of 22336921 in words is "twenty-two million, three hundred thirty-six thousand, nine hundred twenty-one".