111201200121100 has 72 divisors (see below), whose sum is σ = 246613500725760. Its totient is φ = 43503576813120.

The previous prime is 111201200121071. The next prime is 111201200121101. The reversal of 111201200121100 is 1121002102111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111201200121101) 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, 1583160 + ... + 14996959.

It is an arithmetic number, because the mean of its divisors is an integer number (3425187510080).

Almost surely, 2^{111201200121100} is an apocalyptic number.

111201200121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201200121100 is an abundant number, since it is smaller than the sum of its proper divisors (135412300604660).

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

111201200121100 is a wasteful number, since it uses less digits than its factorization.

111201200121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16581607 (or 16581600 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111201200121100 its reverse (1121002102111), we get a palindrome (112322202223211).

The spelling of 111201200121100 in words is "one hundred eleven trillion, two hundred one billion, two hundred million, one hundred twenty-one thousand, one hundred".