12211043213 has 2 divisors, whose sum is σ = 12211043214. Its totient is φ = 12211043212.

The previous prime is 12211043179. The next prime is 12211043219. The reversal of 12211043213 is 31234011221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8611283209 + 3599760004 = 92797^2 + 59998^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211043213 - 2⁸ = 12211042957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211043219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105521606 + 6105521607.

It is an arithmetic number, because the mean of its divisors is an integer number (6105521607).

Almost surely, 2^12211043213 is an apocalyptic number.

It is an amenable number.

12211043213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211043213 is an equidigital number, since it uses as much as digits as its factorization.

12211043213 is an evil number, because the sum of its binary digits is even.

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

Adding to 12211043213 its reverse (31234011221), we get a palindrome (43445054434).

The spelling of 12211043213 in words is "twelve billion, two hundred eleven million, forty-three thousand, two hundred thirteen".