22921037 has 2 divisors, whose sum is σ = 22921038. Its totient is φ = 22921036.

The previous prime is 22921013. The next prime is 22921039. The reversal of 22921037 is 73012922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19307236 + 3613801 = 4394^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 22921037 - 2¹⁰ = 22920013 is a prime.

Together with 22921039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22920997 and 22921015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22921039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11460518 + 11460519.

It is an arithmetic number, because the mean of its divisors is an integer number (11460519).

Almost surely, 2^22921037 is an apocalyptic number.

It is an amenable number.

22921037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22921037 is an equidigital number, since it uses as much as digits as its factorization.

22921037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 22921037 is about 4787.5919834506. The cubic root of 22921037 is about 284.0608751671.

Adding to 22921037 its reverse (73012922), we get a palindrome (95933959).

The spelling of 22921037 in words is "twenty-two million, nine hundred twenty-one thousand, thirty-seven".