22573121 has 4 divisors (see below), whose sum is σ = 23761200. Its totient is φ = 21385044.

The previous prime is 22573099. The next prime is 22573123. The reversal of 22573121 is 12137522.

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-22573121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22573123) 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, 594011 + ... + 594048.

It is an arithmetic number, because the mean of its divisors is an integer number (5940300).

Almost surely, 2^22573121 is an apocalyptic number.

It is an amenable number.

22573121 is a deficient number, since it is larger than the sum of its proper divisors (1188079).

22573121 is a wasteful number, since it uses less digits than its factorization.

22573121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188078.

The product of its digits is 840, while the sum is 23.

The square root of 22573121 is about 4751.1178684600. The cubic root of 22573121 is about 282.6162979541.

The spelling of 22573121 in words is "twenty-two million, five hundred seventy-three thousand, one hundred twenty-one".