21342311299 has 4 divisors (see below), whose sum is σ = 21343022536. Its totient is φ = 21341600064.

The previous prime is 21342311297. The next prime is 21342311321. The reversal of 21342311299 is 99211324312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21342311299 - 2¹ = 21342311297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342311297) 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 in 3 ways as a sum of consecutive naturals, for example, 308529 + ... + 371314.

It is an arithmetic number, because the mean of its divisors is an integer number (5335755634).

Almost surely, 2^21342311299 is an apocalyptic number.

21342311299 is a deficient number, since it is larger than the sum of its proper divisors (711237).

21342311299 is an equidigital number, since it uses as much as digits as its factorization.

21342311299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711236.

The product of its digits is 23328, while the sum is 37.

The spelling of 21342311299 in words is "twenty-one billion, three hundred forty-two million, three hundred eleven thousand, two hundred ninety-nine".