22337921 has 2 divisors, whose sum is σ = 22337922. Its totient is φ = 22337920.

The previous prime is 22337911. The next prime is 22337929. The reversal of 22337921 is 12973322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22193521 + 144400 = 4711^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 22337921 - 2²² = 18143617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22337929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11168960 + 11168961.

It is an arithmetic number, because the mean of its divisors is an integer number (11168961).

Almost surely, 2^22337921 is an apocalyptic number.

It is an amenable number.

22337921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22337921 is an equidigital number, since it uses as much as digits as its factorization.

22337921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 22337921 is about 4726.3009849141. The cubic root of 22337921 is about 281.6312980733.

The spelling of 22337921 in words is "twenty-two million, three hundred thirty-seven thousand, nine hundred twenty-one".