12212330213 has 4 divisors (see below), whose sum is σ = 12221747340. Its totient is φ = 12202913088.

The previous prime is 12212330203. The next prime is 12212330227. The reversal of 12212330213 is 31203321221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31203321221 = 7639 ⋅4084739.

It can be written as a sum of positive squares in 2 ways, for example, as 10100652004 + 2111678209 = 100502^2 + 45953^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212330213 - 2¹² = 12212326117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212330203) 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, 4706618 + ... + 4709211.

It is an arithmetic number, because the mean of its divisors is an integer number (3055436835).

Almost surely, 2^12212330213 is an apocalyptic number.

It is an amenable number.

12212330213 is a deficient number, since it is larger than the sum of its proper divisors (9417127).

12212330213 is an equidigital number, since it uses as much as digits as its factorization.

12212330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9417126.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12212330213 its reverse (31203321221), we get a palindrome (43415651434).

The spelling of 12212330213 in words is "twelve billion, two hundred twelve million, three hundred thirty thousand, two hundred thirteen".