13111100003220 has 192 divisors, whose sum is σ = 39402869022720. Its totient is φ = 3245650716672.

The previous prime is 13111100003201. The next prime is 13111100003249. The reversal of 13111100003220 is 2230000111131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13111100003220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79127379 + ... + 79292901.

It is an arithmetic number, because the mean of its divisors is an integer number (205223276160).

Almost surely, 2^{13111100003220} is an apocalyptic number.

13111100003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111100003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19701434511360).

13111100003220 is an abundant number, since it is smaller than the sum of its proper divisors (26291769019500).

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

13111100003220 is a wasteful number, since it uses less digits than its factorization.

13111100003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166614 (or 166612 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13111100003220 its reverse (2230000111131), we get a palindrome (15341100114351).

The spelling of 13111100003220 in words is "thirteen trillion, one hundred eleven billion, one hundred million, three thousand, two hundred twenty".