13122311130520 has 32 divisors (see below), whose sum is σ = 30153395793600. Its totient is φ = 5137245207808.

The previous prime is 13122311130421. The next prime is 13122311130553. The reversal of 13122311130520 is 2503111322131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489974485 + ... + 3489978244.

It is an arithmetic number, because the mean of its divisors is an integer number (942293618550).

Almost surely, 2^{13122311130520} is an apocalyptic number.

13122311130520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122311130520 is an abundant number, since it is smaller than the sum of its proper divisors (17031084663080).

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

13122311130520 is a wasteful number, since it uses less digits than its factorization.

13122311130520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979952787 (or 6979952783 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 13122311130520 its reverse (2503111322131), we get a palindrome (15625422452651).

The spelling of 13122311130520 in words is "thirteen trillion, one hundred twenty-two billion, three hundred eleven million, one hundred thirty thousand, five hundred twenty".