21322103130312 has 128 divisors (see below), whose sum is σ = 56660703897600. Its totient is φ = 6673638988800.

The previous prime is 21322103130311. The next prime is 21322103130413. The reversal of 21322103130312 is 21303130122312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21322103130311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54166362 + ... + 54558582.

It is an arithmetic number, because the mean of its divisors is an integer number (442661749200).

Almost surely, 2^{21322103130312} 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 21322103130312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28330351948800).

21322103130312 is an abundant number, since it is smaller than the sum of its proper divisors (35338600767288).

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

21322103130312 is a wasteful number, since it uses less digits than its factorization.

21322103130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394407 (or 394403 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21322103130312 its reverse (21303130122312), we get a palindrome (42625233252624).

The spelling of 21322103130312 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred three million, one hundred thirty thousand, three hundred twelve".