22973121 has 18 divisors (see below), whose sum is σ = 33690930. Its totient is φ = 15084576.

The previous prime is 22973087. The next prime is 22973123. The reversal of 22973121 is 12137922.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 505521 = 4740^2 + 711^2 .

It is not a de Polignac number, because 22973121 - 2¹⁰ = 22972097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22973123) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 55965 + ... + 56373.

Almost surely, 2^22973121 is an apocalyptic number.

It is an amenable number.

22973121 is a deficient number, since it is larger than the sum of its proper divisors (10717809).

22973121 is an equidigital number, since it uses as much as digits as its factorization.

22973121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 491 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 22973121 is about 4793.0283746291. The cubic root of 22973121 is about 284.2758717572.

The spelling of 22973121 in words is "twenty-two million, nine hundred seventy-three thousand, one hundred twenty-one".