22960021 has 4 divisors (see below), whose sum is σ = 26240032. Its totient is φ = 19680012.

The previous prime is 22960009. The next prime is 22960043. The reversal of 22960021 is 12006922.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-22960021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22959974 and 22960001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22960061) 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, 1639995 + ... + 1640008.

It is an arithmetic number, because the mean of its divisors is an integer number (6560008).

Almost surely, 2^22960021 is an apocalyptic number.

It is an amenable number.

22960021 is a deficient number, since it is larger than the sum of its proper divisors (3280011).

22960021 is an equidigital number, since it uses as much as digits as its factorization.

22960021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280010.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 22960021 is about 4791.6616115915. The cubic root of 22960021 is about 284.2218271197.

Adding to 22960021 its reverse (12006922), we get a palindrome (34966943).

The spelling of 22960021 in words is "twenty-two million, nine hundred sixty thousand, twenty-one".