111100200002001 has 72 divisors (see below), whose sum is σ = 190207148249664. Its totient is φ = 62285905281600.

The previous prime is 111100200001993. The next prime is 111100200002093. The reversal of 111100200002001 is 100200002001111.

It is a happy number.

It is not a de Polignac number, because 111100200002001 - 2³ = 111100200001993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111100200002201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 938390130 + ... + 938508516.

It is an arithmetic number, because the mean of its divisors is an integer number (2641765947912).

Almost surely, 2^{111100200002001} is an apocalyptic number.

It is an amenable number.

111100200002001 is a deficient number, since it is larger than the sum of its proper divisors (79106948247663).

111100200002001 is a wasteful number, since it uses less digits than its factorization.

111100200002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158611 (or 158601 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111100200002001 its reverse (100200002001111), we get a palindrome (211300202003112).

It can be divided in two parts, 111 and 100200002001, that multiplied together give a palindrome (11122200222111).

The spelling of 111100200002001 in words is "one hundred eleven trillion, one hundred billion, two hundred million, two thousand, one".