11212203211213 has 2 divisors, whose sum is σ = 11212203211214. Its totient is φ = 11212203211212.

The previous prime is 11212203211207. The next prime is 11212203211259. The reversal of 11212203211213 is 31211230221211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10143702666724 + 1068500544489 = 3184918^2 + 1033683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212203211213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212203221213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606101605606 + 5606101605607.

It is an arithmetic number, because the mean of its divisors is an integer number (5606101605607).

Almost surely, 2^{11212203211213} is an apocalyptic number.

It is an amenable number.

11212203211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212203211213 is an equidigital number, since it uses as much as digits as its factorization.

11212203211213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 11212203211213 its reverse (31211230221211), we get a palindrome (42423433432424).

The spelling of 11212203211213 in words is "eleven trillion, two hundred twelve billion, two hundred three million, two hundred eleven thousand, two hundred thirteen".