21232322213 has 8 divisors (see below), whose sum is σ = 21546715008. Its totient is φ = 20919324384.

The previous prime is 21232322207. The next prime is 21232322249. The reversal of 21232322213 is 31222323212.

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 21232322213 - 2⁶ = 21232322149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232322203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318056 + ... + 378977.

It is an arithmetic number, because the mean of its divisors is an integer number (2693339376).

Almost surely, 2^21232322213 is an apocalyptic number.

It is an amenable number.

21232322213 is a deficient number, since it is larger than the sum of its proper divisors (314392795).

21232322213 is an equidigital number, since it uses as much as digits as its factorization.

21232322213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697483.

The product of its digits is 1728, while the sum is 23.

Adding to 21232322213 its reverse (31222323212), we get a palindrome (52454645425).

Subtracting 21232322213 from its reverse (31222323212), we obtain a palindrome (9990000999).

The spelling of 21232322213 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-two thousand, two hundred thirteen".