22312020320 has 96 divisors (see below), whose sum is σ = 55194374592. Its totient is φ = 8507226112.

The previous prime is 22312020293. The next prime is 22312020337. The reversal of 22312020320 is 2302021322.

It is a super-3 number, since 3×22312020320³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067894 + ... + 1088586.

It is an arithmetic number, because the mean of its divisors is an integer number (574941402).

Almost surely, 2^22312020320 is an apocalyptic number.

22312020320 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 22312020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27597187296).

22312020320 is an abundant number, since it is smaller than the sum of its proper divisors (32882354272).

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

22312020320 is a wasteful number, since it uses less digits than its factorization.

22312020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21024 (or 21016 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22312020320 its reverse (2302021322), we get a palindrome (24614041642).

The spelling of 22312020320 in words is "twenty-two billion, three hundred twelve million, twenty thousand, three hundred twenty".