13112112211220 has 48 divisors (see below), whose sum is σ = 30170986066368. Its totient is φ = 4747036200960.

The previous prime is 13112112211201. The next prime is 13112112211229. The reversal of 13112112211220 is 2211221121131.

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 = 13112112211192 and 13112112211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112112211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131228717 + ... + 131328596.

It is an arithmetic number, because the mean of its divisors is an integer number (628562209716).

Almost surely, 2^{13112112211220} is an apocalyptic number.

13112112211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13112112211220 is an abundant number, since it is smaller than the sum of its proper divisors (17058873855148).

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

13112112211220 is a wasteful number, since it uses less digits than its factorization.

13112112211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262557560 (or 262557558 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 13112112211220 its reverse (2211221121131), we get a palindrome (15323333332351).

The spelling of 13112112211220 in words is "thirteen trillion, one hundred twelve billion, one hundred twelve million, two hundred eleven thousand, two hundred twenty".