21344113211 has 8 divisors (see below), whose sum is σ = 22056177024. Its totient is φ = 20633520960.

The previous prime is 21344113181. The next prime is 21344113213. The reversal of 21344113211 is 11231144312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21344113211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21344113213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338360 + ... + 396453.

It is an arithmetic number, because the mean of its divisors is an integer number (2757022128).

Almost surely, 2^21344113211 is an apocalyptic number.

21344113211 is a deficient number, since it is larger than the sum of its proper divisors (712063813).

21344113211 is an equidigital number, since it uses as much as digits as its factorization.

21344113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735781.

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

Adding to 21344113211 its reverse (11231144312), we get a palindrome (32575257523).

The spelling of 21344113211 in words is "twenty-one billion, three hundred forty-four million, one hundred thirteen thousand, two hundred eleven".