21013323341 has 4 divisors (see below), whose sum is σ = 21034400892. Its totient is φ = 20992245792.

The previous prime is 21013323283. The next prime is 21013323343. The reversal of 21013323341 is 14332331012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16628102500 + 4385220841 = 128950^2 + 66221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21013323341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013323343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10537280 + ... + 10539273.

It is an arithmetic number, because the mean of its divisors is an integer number (5258600223).

Almost surely, 2^21013323341 is an apocalyptic number.

It is an amenable number.

21013323341 is a deficient number, since it is larger than the sum of its proper divisors (21077551).

21013323341 is an equidigital number, since it uses as much as digits as its factorization.

21013323341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077550.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21013323341 its reverse (14332331012), we get a palindrome (35345654353).

The spelling of 21013323341 in words is "twenty-one billion, thirteen million, three hundred twenty-three thousand, three hundred forty-one".