212213303321 has 4 divisors (see below), whose sum is σ = 214770090192. Its totient is φ = 209656516452.

The previous prime is 212213303317. The next prime is 212213303327. The reversal of 212213303321 is 123303312212.

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 212213303321 - 2² = 212213303317 is a prime.

It is a super-2 number, since 2×212213303321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212213303327) 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, 1278393311 + ... + 1278393476.

It is an arithmetic number, because the mean of its divisors is an integer number (53692522548).

Almost surely, 2^212213303321 is an apocalyptic number.

It is an amenable number.

212213303321 is a deficient number, since it is larger than the sum of its proper divisors (2556786871).

212213303321 is an equidigital number, since it uses as much as digits as its factorization.

212213303321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556786870.

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

Adding to 212213303321 its reverse (123303312212), we get a palindrome (335516615533).

The spelling of 212213303321 in words is "two hundred twelve billion, two hundred thirteen million, three hundred three thousand, three hundred twenty-one".