20231021322 has 16 divisors (see below), whose sum is σ = 44957825280. Its totient is φ = 6743673756.

The previous prime is 20231021297. The next prime is 20231021323. The reversal of 20231021322 is 22312013202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20231021295 and 20231021304.

It is not an unprimeable number, because it can be changed into a prime (20231021323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187324218 + ... + 187324325.

It is an arithmetic number, because the mean of its divisors is an integer number (2809864080).

Almost surely, 2^20231021322 is an apocalyptic number.

20231021322 is an abundant number, since it is smaller than the sum of its proper divisors (24726803958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231021322 is a wasteful number, since it uses less digits than its factorization.

20231021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374648554 (or 374648548 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20231021322 its reverse (22312013202), we get a palindrome (42543034524).

The spelling of 20231021322 in words is "twenty billion, two hundred thirty-one million, twenty-one thousand, three hundred twenty-two".