1200100331011 has 4 divisors (see below), whose sum is σ = 1200103441632. Its totient is φ = 1200097220392.

The previous prime is 1200100330981. The next prime is 1200100331033. The reversal of 1200100331011 is 1101330010021.

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 1200100331011 - 2¹¹ = 1200100328963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200100330982 and 1200100331000.

It is not an unprimeable number, because it can be changed into a prime (1200100331051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878395 + ... + 1780948.

It is an arithmetic number, because the mean of its divisors is an integer number (300025860408).

Almost surely, 2^{1200100331011} is an apocalyptic number.

1200100331011 is a deficient number, since it is larger than the sum of its proper divisors (3110621).

1200100331011 is an equidigital number, since it uses as much as digits as its factorization.

1200100331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110620.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 1200100331011 its reverse (1101330010021), we get a palindrome (2301430341032).

The spelling of 1200100331011 in words is "one trillion, two hundred billion, one hundred million, three hundred thirty-one thousand, eleven".