1131202320011 has 4 divisors (see below), whose sum is σ = 1145521336800. Its totient is φ = 1116883303224.

The previous prime is 1131202319941. The next prime is 1131202320013. The reversal of 1131202320011 is 1100232021311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131202320011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131202320013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7159508276 + ... + 7159508433.

It is an arithmetic number, because the mean of its divisors is an integer number (286380334200).

Almost surely, 2^{1131202320011} is an apocalyptic number.

1131202320011 is a deficient number, since it is larger than the sum of its proper divisors (14319016789).

1131202320011 is an equidigital number, since it uses as much as digits as its factorization.

1131202320011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14319016788.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1131202320011 its reverse (1100232021311), we get a palindrome (2231434341322).

The spelling of 1131202320011 in words is "one trillion, one hundred thirty-one billion, two hundred two million, three hundred twenty thousand, eleven".