21342311013 has 16 divisors (see below), whose sum is σ = 30023654400. Its totient is φ = 13448064240.

The previous prime is 21342310999. The next prime is 21342311021. The reversal of 21342311013 is 31011324312.

It is not a de Polignac number, because 21342311013 - 2²⁴ = 21325533797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342311713) 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 15 ways as a sum of consecutive naturals, for example, 409803 + ... + 458936.

It is an arithmetic number, because the mean of its divisors is an integer number (1876478400).

Almost surely, 2^21342311013 is an apocalyptic number.

It is an amenable number.

21342311013 is a deficient number, since it is larger than the sum of its proper divisors (8681343387).

21342311013 is a wasteful number, since it uses less digits than its factorization.

21342311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869192.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21342311013 its reverse (31011324312), we get a palindrome (52353635325).

The spelling of 21342311013 in words is "twenty-one billion, three hundred forty-two million, three hundred eleven thousand, thirteen".