22914821 has 2 divisors, whose sum is σ = 22914822. Its totient is φ = 22914820.

The previous prime is 22914809. The next prime is 22914869. The reversal of 22914821 is 12841922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22905796 + 9025 = 4786^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 22914821 - 2¹⁴ = 22898437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22914421) 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, 11457410 + 11457411.

It is an arithmetic number, because the mean of its divisors is an integer number (11457411).

Almost surely, 2^22914821 is an apocalyptic number.

It is an amenable number.

22914821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22914821 is an equidigital number, since it uses as much as digits as its factorization.

22914821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 22914821 is about 4786.9427613039. The cubic root of 22914821 is about 284.0351945076.

The spelling of 22914821 in words is "twenty-two million, nine hundred fourteen thousand, eight hundred twenty-one".