111232112220 has 48 divisors (see below), whose sum is σ = 346055461920. Its totient is φ = 29661896448.

The previous prime is 111232112149. The next prime is 111232112249. The reversal of 111232112220 is 22211232111.

111232112220 is a `hidden beast` number, since 1 + 112 + 321 + 12 + 220 = 666.

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 = 111232112193 and 111232112202.

It is a congruent number.

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, 102992157 + ... + 102993236.

It is an arithmetic number, because the mean of its divisors is an integer number (7209488790).

Almost surely, 2^111232112220 is an apocalyptic number.

111232112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111232112220 is an abundant number, since it is smaller than the sum of its proper divisors (234823349700).

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

111232112220 is a wasteful number, since it uses less digits than its factorization.

111232112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205985411 (or 205985403 counting only the distinct ones).

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

Adding to 111232112220 its reverse (22211232111), we get a palindrome (133443344331).

The spelling of 111232112220 in words is "one hundred eleven billion, two hundred thirty-two million, one hundred twelve thousand, two hundred twenty".