21113342339 has 2 divisors, whose sum is σ = 21113342340. Its totient is φ = 21113342338.

The previous prime is 21113342231. The next prime is 21113342353. The reversal of 21113342339 is 93324331112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113342339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21113342359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556671169 + 10556671170.

It is an arithmetic number, because the mean of its divisors is an integer number (10556671170).

Almost surely, 2^21113342339 is an apocalyptic number.

21113342339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113342339 is an equidigital number, since it uses as much as digits as its factorization.

21113342339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The spelling of 21113342339 in words is "twenty-one billion, one hundred thirteen million, three hundred forty-two thousand, three hundred thirty-nine".