21222132313 has 4 divisors (see below), whose sum is σ = 21222842320. Its totient is φ = 21221422308.

The previous prime is 21222132311. The next prime is 21222132377. The reversal of 21222132313 is 31323122212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21222132313 - 2¹ = 21222132311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222132311) 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, 308103 + ... + 370636.

It is an arithmetic number, because the mean of its divisors is an integer number (5305710580).

Almost surely, 2^21222132313 is an apocalyptic number.

It is an amenable number.

21222132313 is a deficient number, since it is larger than the sum of its proper divisors (710007).

21222132313 is an equidigital number, since it uses as much as digits as its factorization.

21222132313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710006.

The product of its digits is 864, while the sum is 22.

Adding to 21222132313 its reverse (31323122212), we get a palindrome (52545254525).

The spelling of 21222132313 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, three hundred thirteen".