13111031221230 has 128 divisors (see below), whose sum is σ = 33282901555200. Its totient is φ = 3300035042304.

The previous prime is 13111031221229. The next prime is 13111031221289. The reversal of 13111031221230 is 3212213011131.

It is a junction number, because it is equal to n+sod(n) for n = 13111031221197 and 13111031221206.

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, 34937874 + ... + 35311146.

It is an arithmetic number, because the mean of its divisors is an integer number (260022668400).

Almost surely, 2^{13111031221230} is an apocalyptic number.

13111031221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13111031221230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16641450777600).

13111031221230 is an abundant number, since it is smaller than the sum of its proper divisors (20171870333970).

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

13111031221230 is a wasteful number, since it uses less digits than its factorization.

13111031221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374218.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13111031221230 its reverse (3212213011131), we get a palindrome (16323244232361).

The spelling of 13111031221230 in words is "thirteen trillion, one hundred eleven billion, thirty-one million, two hundred twenty-one thousand, two hundred thirty".