111012221120100 has 72 divisors (see below), whose sum is σ = 321288489866400. Its totient is φ = 29594675546880.

The previous prime is 111012221119973. The next prime is 111012221120123. The reversal of 111012221120100 is 1021122210111.

It is a happy number.

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 111012221120100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52609942 + ... + 54679341.

Almost surely, 2^{111012221120100} is an apocalyptic number.

111012221120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012221120100 is an abundant number, since it is smaller than the sum of its proper divisors (210276268746300).

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

111012221120100 is a wasteful number, since it uses less digits than its factorization.

111012221120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107292749 (or 107292742 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111012221120100 its reverse (1021122210111), we get a palindrome (112033343330211).

The spelling of 111012221120100 in words is "one hundred eleven trillion, twelve billion, two hundred twenty-one million, one hundred twenty thousand, one hundred".