20221323430 has 48 divisors (see below), whose sum is σ = 46190167056. Its totient is φ = 6302748480.

The previous prime is 20221323427. The next prime is 20221323431. The reversal of 20221323430 is 3432312202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221323431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1870429 + ... + 1881208.

It is an arithmetic number, because the mean of its divisors is an integer number (962295147).

Almost surely, 2^20221323430 is an apocalyptic number.

20221323430 is an abundant number, since it is smaller than the sum of its proper divisors (25968843626).

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

20221323430 is a wasteful number, since it uses less digits than its factorization.

20221323430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751669 (or 3751662 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20221323430 its reverse (3432312202), we get a palindrome (23653635632).

The spelling of 20221323430 in words is "twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, four hundred thirty".