21322121321113 has 48 divisors (see below), whose sum is σ = 22644708004800. Its totient is φ = 20051364009600.

The previous prime is 21322121321041. The next prime is 21322121321153. The reversal of 21322121321113 is 31112312122312.

It is a de Polignac number, because none of the positive numbers 2^k-21322121321113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322121321153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4287574695 + ... + 4287579667.

It is an arithmetic number, because the mean of its divisors is an integer number (471764750100).

Almost surely, 2^{21322121321113} is an apocalyptic number.

It is an amenable number.

21322121321113 is a deficient number, since it is larger than the sum of its proper divisors (1322586683687).

21322121321113 is a wasteful number, since it uses less digits than its factorization.

21322121321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494 (or 5423 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 21322121321113 its reverse (31112312122312), we get a palindrome (52434433443425).

The spelling of 21322121321113 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred thirteen".