2131110112321 has 2 divisors, whose sum is σ = 2131110112322. Its totient is φ = 2131110112320.

The previous prime is 2131110112291. The next prime is 2131110112349. The reversal of 2131110112321 is 1232110111312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2091682450225 + 39427662096 = 1446265^2 + 198564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131110112321 - 2²³ = 2131101723713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131110116321) 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 as a sum of consecutive naturals, namely, 1065555056160 + 1065555056161.

It is an arithmetic number, because the mean of its divisors is an integer number (1065555056161).

Almost surely, 2^{2131110112321} is an apocalyptic number.

It is an amenable number.

2131110112321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131110112321 is an equidigital number, since it uses as much as digits as its factorization.

2131110112321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2131110112321 its reverse (1232110111312), we get a palindrome (3363220223633).

The spelling of 2131110112321 in words is "two trillion, one hundred thirty-one billion, one hundred ten million, one hundred twelve thousand, three hundred twenty-one".