1200100010111 has 4 divisors (see below), whose sum is σ = 1200168530400. Its totient is φ = 1200031489824.

The previous prime is 1200100010099. The next prime is 1200100010167. The reversal of 1200100010111 is 1110100010021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1200100010111 - 2¹⁸ = 1200099747967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200100010411) 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 3 ways as a sum of consecutive naturals, for example, 34233866 + ... + 34268903.

It is an arithmetic number, because the mean of its divisors is an integer number (300042132600).

Almost surely, 2^{1200100010111} is an apocalyptic number.

1200100010111 is a deficient number, since it is larger than the sum of its proper divisors (68520289).

1200100010111 is an equidigital number, since it uses as much as digits as its factorization.

1200100010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68520288.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1200100010111 its reverse (1110100010021), we get a palindrome (2310200020132).

The spelling of 1200100010111 in words is "one trillion, two hundred billion, one hundred million, ten thousand, one hundred eleven".