12212132213 has 4 divisors (see below), whose sum is σ = 12212372448. Its totient is φ = 12211891980.

The previous prime is 12212132171. The next prime is 12212132221. The reversal of 12212132213 is 31223121221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31223121221 = 9181 ⋅3400841.

It is a cyclic number.

It is not a de Polignac number, because 12212132213 - 2¹⁴ = 12212115829 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 (12212132293) 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, 10553 + ... + 156638.

It is an arithmetic number, because the mean of its divisors is an integer number (3053093112).

Almost surely, 2^12212132213 is an apocalyptic number.

It is an amenable number.

12212132213 is a deficient number, since it is larger than the sum of its proper divisors (240235).

12212132213 is an equidigital number, since it uses as much as digits as its factorization.

12212132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240234.

The product of its digits is 288, while the sum is 20.

Adding to 12212132213 its reverse (31223121221), we get a palindrome (43435253434).

The spelling of 12212132213 in words is "twelve billion, two hundred twelve million, one hundred thirty-two thousand, two hundred thirteen".