21402312041311 has 2 divisors, whose sum is σ = 21402312041312. Its totient is φ = 21402312041310.

The previous prime is 21402312041261. The next prime is 21402312041329. The reversal of 21402312041311 is 11314021320412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21402312041311 - 2⁷ = 21402312041183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21402312041111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10701156020655 + 10701156020656.

It is an arithmetic number, because the mean of its divisors is an integer number (10701156020656).

Almost surely, 2^{21402312041311} is an apocalyptic number.

21402312041311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21402312041311 is an equidigital number, since it uses as much as digits as its factorization.

21402312041311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21402312041311 its reverse (11314021320412), we get a palindrome (32716333361723).

The spelling of 21402312041311 in words is "twenty-one trillion, four hundred two billion, three hundred twelve million, forty-one thousand, three hundred eleven".