2131320223111 has 4 divisors (see below), whose sum is σ = 2223986319792. Its totient is φ = 2038654126432.

The previous prime is 2131320223033. The next prime is 2131320223117. The reversal of 2131320223111 is 1113220231312.

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-2131320223111 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 (2131320223117) 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, 46333048306 + ... + 46333048351.

It is an arithmetic number, because the mean of its divisors is an integer number (555996579948).

Almost surely, 2^{2131320223111} is an apocalyptic number.

2131320223111 is a deficient number, since it is larger than the sum of its proper divisors (92666096681).

2131320223111 is an equidigital number, since it uses as much as digits as its factorization.

2131320223111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92666096680.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2131320223111 its reverse (1113220231312), we get a palindrome (3244540454423).

The spelling of 2131320223111 in words is "two trillion, one hundred thirty-one billion, three hundred twenty million, two hundred twenty-three thousand, one hundred eleven".