11212221002237 has 2 divisors, whose sum is σ = 11212221002238. Its totient is φ = 11212221002236.

The previous prime is 11212221002201. The next prime is 11212221002243. The reversal of 11212221002237 is 73220012221211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7856506278916 + 3355714723321 = 2802946^2 + 1831861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11212221002237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11212221002287) 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, 5606110501118 + 5606110501119.

It is an arithmetic number, because the mean of its divisors is an integer number (5606110501119).

Almost surely, 2^{11212221002237} is an apocalyptic number.

It is an amenable number.

11212221002237 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212221002237 is an equidigital number, since it uses as much as digits as its factorization.

11212221002237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 11212221002237 its reverse (73220012221211), we get a palindrome (84432233223448).

The spelling of 11212221002237 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, two thousand, two hundred thirty-seven".