111012200021220 has 48 divisors (see below), whose sum is σ = 313739152227648. Its totient is φ = 29326587418240.

The previous prime is 111012200021171. The next prime is 111012200021249. The reversal of 111012200021220 is 22120002210111.

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 111012200021220.

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, 8645803551 + ... + 8645816390.

It is an arithmetic number, because the mean of its divisors is an integer number (6536232338076).

Almost surely, 2^{111012200021220} is an apocalyptic number.

111012200021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012200021220 is an abundant number, since it is smaller than the sum of its proper divisors (202726952206428).

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

111012200021220 is a wasteful number, since it uses less digits than its factorization.

111012200021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17291620060 (or 17291620058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111012200021220 its reverse (22120002210111), we get a palindrome (133132202231331).

The spelling of 111012200021220 in words is "one hundred eleven trillion, twelve billion, two hundred million, twenty-one thousand, two hundred twenty".