111443144220 has 96 divisors (see below), whose sum is σ = 347806267200. Its totient is φ = 29624378112.

The previous prime is 111443144213. The next prime is 111443144243. The reversal of 111443144220 is 22441344111.

111443144220 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 431 + 4 + 4 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154335 + ... + 496694.

It is an arithmetic number, because the mean of its divisors is an integer number (3622981950).

Almost surely, 2^111443144220 is an apocalyptic number.

111443144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111443144220 is an abundant number, since it is smaller than the sum of its proper divisors (236363122980).

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

111443144220 is a wasteful number, since it uses less digits than its factorization.

111443144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651364 (or 651356 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 111443144220 its reverse (22441344111), we get a palindrome (133884488331).

The spelling of 111443144220 in words is "one hundred eleven billion, four hundred forty-three million, one hundred forty-four thousand, two hundred twenty".