21134321403399 has 6 divisors (see below), whose sum is σ = 30527353138256. Its totient is φ = 14089547602260.

The previous prime is 21134321403347. The next prime is 21134321403451. The reversal of 21134321403399 is 99330412343112.

21134321403399 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 43 + 214 + 0 + 3 + 399 = 666.

It is an interprime number because it is at equal distance from previous prime (21134321403347) and next prime (21134321403451).

It is not a de Polignac number, because 21134321403399 - 2⁴⁰ = 20034809775623 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 (21134321403319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1174128966847 + ... + 1174128966864.

Almost surely, 2^{21134321403399} is an apocalyptic number.

21134321403399 is a deficient number, since it is larger than the sum of its proper divisors (9393031734857).

21134321403399 is a wasteful number, since it uses less digits than its factorization.

21134321403399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348257933717 (or 2348257933714 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 21134321403399 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred twenty-one million, four hundred three thousand, three hundred ninety-nine".