111220110020100 has 72 divisors (see below), whose sum is σ = 321800786570368. Its totient is φ = 29658333340800.

The previous prime is 111220110020087. The next prime is 111220110020101. The reversal of 111220110020100 is 1020011022111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (111220110020101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22768302 + ... + 27218298.

Almost surely, 2^{111220110020100} is an apocalyptic number.

111220110020100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220110020100 is an abundant number, since it is smaller than the sum of its proper divisors (210580676550268).

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

111220110020100 is a wasteful number, since it uses less digits than its factorization.

111220110020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533325 (or 4533318 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111220110020100 its reverse (1020011022111), we get a palindrome (112240121042211).

The spelling of 111220110020100 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred ten million, twenty thousand, one hundred".