21223213313 has 8 divisors (see below), whose sum is σ = 22363984320. Its totient is φ = 20084818320.

The previous prime is 21223213307. The next prime is 21223213373. The reversal of 21223213313 is 31331232212.

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

It is a cyclic number.

It is not a de Polignac number, because 21223213313 - 2²⁰ = 21222164737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21223213373) 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, 575645 + ... + 611402.

It is an arithmetic number, because the mean of its divisors is an integer number (2795498040).

Almost surely, 2^21223213313 is an apocalyptic number.

It is an amenable number.

21223213313 is a deficient number, since it is larger than the sum of its proper divisors (1140771007).

21223213313 is a wasteful number, since it uses less digits than its factorization.

21223213313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188007.

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

Adding to 21223213313 its reverse (31331232212), we get a palindrome (52554445525).

The spelling of 21223213313 in words is "twenty-one billion, two hundred twenty-three million, two hundred thirteen thousand, three hundred thirteen".