20322243020 has 144 divisors (see below), whose sum is σ = 46571683872. Its totient is φ = 7445053440.

The previous prime is 20322242999. The next prime is 20322243059. The reversal of 20322243020 is 2034222302.

It is a super-2 number, since 2×20322243020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20322242983 and 20322243001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37563950 + ... + 37564490.

Almost surely, 2^20322243020 is an apocalyptic number.

20322243020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20322243020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23285841936).

20322243020 is an abundant number, since it is smaller than the sum of its proper divisors (26249440852).

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

20322243020 is a wasteful number, since it uses less digits than its factorization.

20322243020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20322243020 its reverse (2034222302), we get a palindrome (22356465322).

The spelling of 20322243020 in words is "twenty billion, three hundred twenty-two million, two hundred forty-three thousand, twenty".