22458319321 has 3 divisors (see below), whose sum is σ = 22458469183. Its totient is φ = 22458169460.

The previous prime is 22458319313. The next prime is 22458319349. The reversal of 22458319321 is 12391385422.

The square root of 22458319321 is 149861.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5563518921 + 16894800400 = 74589^2 + 129980^2 .

It is not a de Polignac number, because 22458319321 - 2³ = 22458319313 is a prime.

It is a super-2 number, since 2×22458319321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22458313321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 74931 + ... + 224791.

Almost surely, 2^22458319321 is an apocalyptic number.

22458319321 is the 149861-st square number.

22458319321 is the 74931-st centered octagonal number.

It is an amenable number.

22458319321 is a deficient number, since it is larger than the sum of its proper divisors (149862).

22458319321 is an frugal number, since it uses more digits than its factorization.

22458319321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299722 (or 149861 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The spelling of 22458319321 in words is "twenty-two billion, four hundred fifty-eight million, three hundred nineteen thousand, three hundred twenty-one".