13111321240220 has 48 divisors (see below), whose sum is σ = 31473624772800. Its totient is φ = 4494388168704.

The previous prime is 13111321240207. The next prime is 13111321240261. The reversal of 13111321240220 is 2204212311131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8918645 + ... + 10284204.

It is an arithmetic number, because the mean of its divisors is an integer number (655700516100).

Almost surely, 2^{13111321240220} is an apocalyptic number.

13111321240220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111321240220 is an abundant number, since it is smaller than the sum of its proper divisors (18362303532580).

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

13111321240220 is a wasteful number, since it uses less digits than its factorization.

13111321240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19207742 (or 19207740 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 13111321240220 its reverse (2204212311131), we get a palindrome (15315533551351).

The spelling of 13111321240220 in words is "thirteen trillion, one hundred eleven billion, three hundred twenty-one million, two hundred forty thousand, two hundred twenty".