22354512321 has 32 divisors (see below), whose sum is σ = 31947696000. Its totient is φ = 13854551040.

The previous prime is 22354512319. The next prime is 22354512373. The reversal of 22354512321 is 12321545322.

It is not a de Polignac number, because 22354512321 - 2¹ = 22354512319 is a prime.

It is a super-2 number, since 2×22354512321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22354512311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1833955 + ... + 1846103.

It is an arithmetic number, because the mean of its divisors is an integer number (998365500).

Almost surely, 2^22354512321 is an apocalyptic number.

It is an amenable number.

22354512321 is a deficient number, since it is larger than the sum of its proper divisors (9593183679).

22354512321 is a wasteful number, since it uses less digits than its factorization.

22354512321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12609.

The product of its digits is 14400, while the sum is 30.

The spelling of 22354512321 in words is "twenty-two billion, three hundred fifty-four million, five hundred twelve thousand, three hundred twenty-one".