111200200001001 has 40 divisors (see below), whose sum is σ = 175886559915264. Its totient is φ = 69772168229760.

The previous prime is 111200200000963. The next prime is 111200200001017. The reversal of 111200200001001 is 100100002002111.

It is a happy number.

It is not a de Polignac number, because 111200200001001 - 2²⁶ = 111200132892137 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (111200200001021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 305058816 + ... + 305423118.

Almost surely, 2^{111200200001001} is an apocalyptic number.

It is an amenable number.

111200200001001 is a deficient number, since it is larger than the sum of its proper divisors (64686359914263).

111200200001001 is a wasteful number, since it uses less digits than its factorization.

111200200001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586003 (or 585994 counting only the distinct ones).

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

Adding to 111200200001001 its reverse (100100002002111), we get a palindrome (211300202003112).

The spelling of 111200200001001 in words is "one hundred eleven trillion, two hundred billion, two hundred million, one thousand, one".