13512004220 has 192 divisors, whose sum is σ = 34848455040. Its totient is φ = 4333056000.

The previous prime is 13512004213. The next prime is 13512004237. The reversal of 13512004220 is 2240021531.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13512004192 and 13512004201.

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, 8376134 + ... + 8377746.

It is an arithmetic number, because the mean of its divisors is an integer number (181502370).

Almost surely, 2^13512004220 is an apocalyptic number.

13512004220 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 13512004220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17424227520).

13512004220 is an abundant number, since it is smaller than the sum of its proper divisors (21336450820).

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

13512004220 is a wasteful number, since it uses less digits than its factorization.

13512004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776 (or 1774 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 13512004220 its reverse (2240021531), we get a palindrome (15752025751).

The spelling of 13512004220 in words is "thirteen billion, five hundred twelve million, four thousand, two hundred twenty".