22312320000 has 220 divisors, whose sum is σ = 74320691016. Its totient is φ = 5949440000.

The previous prime is 22312319999. The next prime is 22312320013. The reversal of 22312320000 is 2321322.

It is a super-3 number, since 3×22312320000³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1914190 + ... + 1925810.

Almost surely, 2^22312320000 is an apocalyptic number.

22312320000 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 22312320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37160345508).

22312320000 is an abundant number, since it is smaller than the sum of its proper divisors (52008371016).

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

22312320000 is an equidigital number, since it uses as much as digits as its factorization.

22312320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11664 (or 11631 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 22312320000 its reverse (2321322), we get a palindrome (22314641322).

The spelling of 22312320000 in words is "twenty-two billion, three hundred twelve million, three hundred twenty thousand".