111201220001100 has 36 divisors (see below), whose sum is σ = 321742196537384. Its totient is φ = 29653658666880.

The previous prime is 111201220001093. The next prime is 111201220001189. The reversal of 111201220001100 is 1100022102111.

It is a super-2 number, since 2×111201220001100² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185335366369 + ... + 185335366968.

Almost surely, 2^{111201220001100} is an apocalyptic number.

111201220001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201220001100 is an abundant number, since it is smaller than the sum of its proper divisors (210540976536284).

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

111201220001100 is a wasteful number, since it uses less digits than its factorization.

111201220001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370670733354 (or 370670733347 counting only the distinct ones).

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

Adding to 111201220001100 its reverse (1100022102111), we get a palindrome (112301242103211).

The spelling of 111201220001100 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty million, one thousand, one hundred".