21343215133469 has 2 divisors, whose sum is σ = 21343215133470. Its totient is φ = 21343215133468.

The previous prime is 21343215133433. The next prime is 21343215133547. The reversal of 21343215133469 is 96433151234312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19206393900100 + 2136821233369 = 4382510^2 + 1461787^2 .

It is a cyclic number.

It is not a de Polignac number, because 21343215133469 - 2²⁸ = 21342946698013 is a prime.

It is a super-2 number, since 2×21343215133469² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21343215133169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671607566734 + 10671607566735.

It is an arithmetic number, because the mean of its divisors is an integer number (10671607566735).

Almost surely, 2^{21343215133469} is an apocalyptic number.

It is an amenable number.

21343215133469 is a deficient number, since it is larger than the sum of its proper divisors (1).

21343215133469 is an equidigital number, since it uses as much as digits as its factorization.

21343215133469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 47.

The spelling of 21343215133469 in words is "twenty-one trillion, three hundred forty-three billion, two hundred fifteen million, one hundred thirty-three thousand, four hundred sixty-nine".