111111122001100 has 36 divisors (see below), whose sum is σ = 259658145110224. Its totient is φ = 41025645046080.

The previous prime is 111111122001071. The next prime is 111111122001107. The reversal of 111111122001100 is 1100221111111.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111111122001107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42735045624 + ... + 42735048223.

Almost surely, 2^{111111122001100} is an apocalyptic number.

111111122001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111122001100 is an abundant number, since it is smaller than the sum of its proper divisors (148547023109124).

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

111111122001100 is a wasteful number, since it uses less digits than its factorization.

111111122001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85470093874 (or 85470093867 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111111122001100 its reverse (1100221111111), we get a palindrome (112211343112211).

The spelling of 111111122001100 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, one thousand, one hundred".