111132122220 has 144 divisors (see below), whose sum is σ = 407920339008. Its totient is φ = 23907409920.

The previous prime is 111132122183. The next prime is 111132122267. The reversal of 111132122220 is 22221231111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111132122193 and 111132122202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2572701 + ... + 2615540.

It is an arithmetic number, because the mean of its divisors is an integer number (2832780132).

Almost surely, 2^111132122220 is an apocalyptic number.

111132122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111132122220 is an abundant number, since it is smaller than the sum of its proper divisors (296788216788).

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

111132122220 is a wasteful number, since it uses less digits than its factorization.

111132122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188280 (or 5188275 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 111132122220 its reverse (22221231111), we get a palindrome (133353353331).

The spelling of 111132122220 in words is "one hundred eleven billion, one hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty".