22031315712 has 270 divisors, whose sum is σ = 76422374028. Its totient is φ = 6294371328.

The previous prime is 22031315681. The next prime is 22031315717. The reversal of 22031315712 is 21751313022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22031315717) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1005223 + ... + 1026905.

Almost surely, 2^22031315712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22031315712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38211187014).

22031315712 is an abundant number, since it is smaller than the sum of its proper divisors (54391058316).

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

22031315712 is an equidigital number, since it uses as much as digits as its factorization.

22031315712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21725 (or 21695 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 22031315712 its reverse (21751313022), we get a palindrome (43782628734).

The spelling of 22031315712 in words is "twenty-two billion, thirty-one million, three hundred fifteen thousand, seven hundred twelve".