20332321097 has 16 divisors (see below), whose sum is σ = 23353747200. Its totient is φ = 17506869840.

The previous prime is 20332321081. The next prime is 20332321099. The reversal of 20332321097 is 79012323302.

It is a cyclic number.

It is not a de Polignac number, because 20332321097 - 2⁴ = 20332321081 is a prime.

It is a super-2 number, since 2×20332321097² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332321099) 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 15 ways as a sum of consecutive naturals, for example, 1116854 + ... + 1134912.

It is an arithmetic number, because the mean of its divisors is an integer number (1459609200).

Almost surely, 2^20332321097 is an apocalyptic number.

It is an amenable number.

20332321097 is a deficient number, since it is larger than the sum of its proper divisors (3021426103).

20332321097 is a wasteful number, since it uses less digits than its factorization.

20332321097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23476.

The product of its (nonzero) digits is 13608, while the sum is 32.

Adding to 20332321097 its reverse (79012323302), we get a palindrome (99344644399).

The spelling of 20332321097 in words is "twenty billion, three hundred thirty-two million, three hundred twenty-one thousand, ninety-seven".