22921801 has 4 divisors (see below), whose sum is σ = 26196352. Its totient is φ = 19647252.

The previous prime is 22921799. The next prime is 22921807. The reversal of 22921801 is 10812922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22921801 - 2¹ = 22921799 is a prime.

It is a super-2 number, since 2×22921801² = 1050817922167202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22921807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637265 + ... + 1637278.

It is an arithmetic number, because the mean of its divisors is an integer number (6549088).

Almost surely, 2^22921801 is an apocalyptic number.

It is an amenable number.

22921801 is a deficient number, since it is larger than the sum of its proper divisors (3274551).

22921801 is an equidigital number, since it uses as much as digits as its factorization.

22921801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274550.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 22921801 is about 4787.6717723754. The cubic root of 22921801 is about 284.0640312212.

The spelling of 22921801 in words is "twenty-two million, nine hundred twenty-one thousand, eight hundred one".