12213206737 has 2 divisors, whose sum is σ = 12213206738. Its totient is φ = 12213206736.

The previous prime is 12213206647. The next prime is 12213206743. The reversal of 12213206737 is 73760231221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11735172241 + 478034496 = 108329^2 + 21864^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213206737 - 2³¹ = 10065723089 is a prime.

It is not a weakly prime, because it can be changed into another prime (12213206777) 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, 6106603368 + 6106603369.

It is an arithmetic number, because the mean of its divisors is an integer number (6106603369).

Almost surely, 2^12213206737 is an apocalyptic number.

It is an amenable number.

12213206737 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213206737 is an equidigital number, since it uses as much as digits as its factorization.

12213206737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

Adding to 12213206737 its reverse (73760231221), we get a palindrome (85973437958).

The spelling of 12213206737 in words is "twelve billion, two hundred thirteen million, two hundred six thousand, seven hundred thirty-seven".