22321546997 has 4 divisors (see below), whose sum is σ = 23496365280. Its totient is φ = 21146728716.

The previous prime is 22321546981. The next prime is 22321547021. The reversal of 22321546997 is 79964512322.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79964512322 = 2 ⋅39982256161.

It is a cyclic number.

It is not a de Polignac number, because 22321546997 - 2⁴ = 22321546981 is a prime.

It is a super-3 number, since 3×22321546997³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321546097) 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, 587409113 + ... + 587409150.

It is an arithmetic number, because the mean of its divisors is an integer number (5874091320).

Almost surely, 2^22321546997 is an apocalyptic number.

It is an amenable number.

22321546997 is a deficient number, since it is larger than the sum of its proper divisors (1174818283).

22321546997 is a wasteful number, since it uses less digits than its factorization.

22321546997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174818282.

The product of its digits is 1632960, while the sum is 50.

The spelling of 22321546997 in words is "twenty-two billion, three hundred twenty-one million, five hundred forty-six thousand, nine hundred ninety-seven".