12212003213 has 4 divisors (see below), whose sum is σ = 12212671488. Its totient is φ = 12211334940.

The previous prime is 12212003207. The next prime is 12212003233. The reversal of 12212003213 is 31230021221.

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 12212003213 - 2²² = 12207808909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212003191 and 12212003200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212003233) 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, 305933 + ... + 343538.

It is an arithmetic number, because the mean of its divisors is an integer number (3053167872).

Almost surely, 2^12212003213 is an apocalyptic number.

It is an amenable number.

12212003213 is a deficient number, since it is larger than the sum of its proper divisors (668275).

12212003213 is an equidigital number, since it uses as much as digits as its factorization.

12212003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668274.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12212003213 its reverse (31230021221), we get a palindrome (43442024434).

The spelling of 12212003213 in words is "twelve billion, two hundred twelve million, three thousand, two hundred thirteen".