21313214411 has 4 divisors (see below), whose sum is σ = 21313843824. Its totient is φ = 21312585000.

The previous prime is 21313214399. The next prime is 21313214443. The reversal of 21313214411 is 11441231312.

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 21313214411 - 2²⁶ = 21246105547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21313214311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260840 + ... + 332661.

It is an arithmetic number, because the mean of its divisors is an integer number (5328460956).

Almost surely, 2^21313214411 is an apocalyptic number.

21313214411 is a deficient number, since it is larger than the sum of its proper divisors (629413).

21313214411 is an equidigital number, since it uses as much as digits as its factorization.

21313214411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629412.

The product of its digits is 576, while the sum is 23.

Adding to 21313214411 its reverse (11441231312), we get a palindrome (32754445723).

The spelling of 21313214411 in words is "twenty-one billion, three hundred thirteen million, two hundred fourteen thousand, four hundred eleven".