22021320131312 has 20 divisors (see below), whose sum is σ = 43658547471000. Its totient is φ = 10754598203328.

The previous prime is 22021320131273. The next prime is 22021320131339. The reversal of 22021320131312 is 21313102312022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16003865687 + ... + 16003867062.

It is an arithmetic number, because the mean of its divisors is an integer number (2182927373550).

Almost surely, 2^{22021320131312} is an apocalyptic number.

It is an amenable number.

22021320131312 is a deficient number, since it is larger than the sum of its proper divisors (21637227339688).

22021320131312 is a wasteful number, since it uses less digits than its factorization.

22021320131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32007732800 (or 32007732794 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22021320131312 its reverse (21313102312022), we get a palindrome (43334422443334).

The spelling of 22021320131312 in words is "twenty-two trillion, twenty-one billion, three hundred twenty million, one hundred thirty-one thousand, three hundred twelve".