21113014343 has 2 divisors, whose sum is σ = 21113014344. Its totient is φ = 21113014342.

The previous prime is 21113014331. The next prime is 21113014393. The reversal of 21113014343 is 34341031112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21113014343 - 2⁴ = 21113014327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21113014303) 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 as a sum of consecutive naturals, namely, 10556507171 + 10556507172.

It is an arithmetic number, because the mean of its divisors is an integer number (10556507172).

Almost surely, 2^21113014343 is an apocalyptic number.

21113014343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113014343 is an equidigital number, since it uses as much as digits as its factorization.

21113014343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21113014343 its reverse (34341031112), we get a palindrome (55454045455).

The spelling of 21113014343 in words is "twenty-one billion, one hundred thirteen million, fourteen thousand, three hundred forty-three".