22948921 has 2 divisors, whose sum is σ = 22948922. Its totient is φ = 22948920.

The previous prime is 22948873. The next prime is 22948927. The reversal of 22948921 is 12984922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22934521 + 14400 = 4789^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 22948921 - 2¹¹ = 22946873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22948927) 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, 11474460 + 11474461.

It is an arithmetic number, because the mean of its divisors is an integer number (11474461).

Almost surely, 2^22948921 is an apocalyptic number.

It is an amenable number.

22948921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22948921 is an equidigital number, since it uses as much as digits as its factorization.

22948921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The square root of 22948921 is about 4790.5032094760. The cubic root of 22948921 is about 284.1760174806.

The spelling of 22948921 in words is "twenty-two million, nine hundred forty-eight thousand, nine hundred twenty-one".