111200011002100 has 72 divisors (see below), whose sum is σ = 252089085765888. Its totient is φ = 42526548998400.

The previous prime is 111200011002061. The next prime is 111200011002121. The reversal of 111200011002100 is 1200110002111.

It is a super-2 number, since 2×111200011002100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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, 215832889 + ... + 216347488.

It is an arithmetic number, because the mean of its divisors is an integer number (3501237302304).

Almost surely, 2^{111200011002100} is an apocalyptic number.

111200011002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200011002100 is an abundant number, since it is smaller than the sum of its proper divisors (140889074763788).

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

111200011002100 is a wasteful number, since it uses less digits than its factorization.

111200011002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432180505 (or 432180498 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111200011002100 its reverse (1200110002111), we get a palindrome (112400121004211).

The spelling of 111200011002100 in words is "one hundred eleven trillion, two hundred billion, eleven million, two thousand, one hundred".