22921005 has 16 divisors (see below), whose sum is σ = 37018944. Its totient is φ = 12109440.

The previous prime is 22920983. The next prime is 22921013. The reversal of 22921005 is 50012922.

It is not a de Polignac number, because 22921005 - 2⁹ = 22920493 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5536 + ... + 8745.

It is an arithmetic number, because the mean of its divisors is an integer number (2313684).

Almost surely, 2^22921005 is an apocalyptic number.

It is an amenable number.

22921005 is a deficient number, since it is larger than the sum of its proper divisors (14097939).

22921005 is a wasteful number, since it uses less digits than its factorization.

22921005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14396.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 22921005 is about 4787.5886414770. The cubic root of 22921005 is about 284.0607429749.

Adding to 22921005 its reverse (50012922), we get a palindrome (72933927).

The spelling of 22921005 in words is "twenty-two million, nine hundred twenty-one thousand, five".