1200200100111 has 12 divisors (see below), whose sum is σ = 1733683348488. Its totient is φ = 800105254704.

The previous prime is 1200200100107. The next prime is 1200200100139. The reversal of 1200200100111 is 1110010020021.

It is a happy number.

It is not a de Polignac number, because 1200200100111 - 2² = 1200200100107 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1200200100093 and 1200200100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200200100511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2073720 + ... + 2588573.

It is an arithmetic number, because the mean of its divisors is an integer number (144473612374).

Almost surely, 2^{1200200100111} is an apocalyptic number.

1200200100111 is a deficient number, since it is larger than the sum of its proper divisors (533483248377).

1200200100111 is a wasteful number, since it uses less digits than its factorization.

1200200100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4690902 (or 4690899 counting only the distinct ones).

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

Adding to 1200200100111 its reverse (1110010020021), we get a palindrome (2310210120132).

The spelling of 1200200100111 in words is "one trillion, two hundred billion, two hundred million, one hundred thousand, one hundred eleven".