13221522120044 has 96 divisors (see below), whose sum is σ = 27627332898816. Its totient is φ = 5413213048320.

The previous prime is 13221522120031. The next prime is 13221522120061. The reversal of 13221522120044 is 44002122512231.

It is a junction number, because it is equal to n+sod(n) for n = 13221522119989 and 13221522120016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2879876189 + ... + 2879880779.

It is an arithmetic number, because the mean of its divisors is an integer number (287784717696).

Almost surely, 2^{13221522120044} is an apocalyptic number.

13221522120044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13221522120044 is an abundant number, since it is smaller than the sum of its proper divisors (14405810778772).

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

13221522120044 is a wasteful number, since it uses less digits than its factorization.

13221522120044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255 (or 9253 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 13221522120044 its reverse (44002122512231), we get a palindrome (57223644632275).

The spelling of 13221522120044 in words is "thirteen trillion, two hundred twenty-one billion, five hundred twenty-two million, one hundred twenty thousand, forty-four".