12213002173 has 2 divisors, whose sum is σ = 12213002174. Its totient is φ = 12213002172.

The previous prime is 12213002099. The next prime is 12213002209. The reversal of 12213002173 is 37120031221.

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., 11503206009 + 709796164 = 107253^2 + 26642^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213002173 - 2¹³ = 12212993981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12213002873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106501086 + 6106501087.

It is an arithmetic number, because the mean of its divisors is an integer number (6106501087).

Almost surely, 2^12213002173 is an apocalyptic number.

It is an amenable number.

12213002173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213002173 is an equidigital number, since it uses as much as digits as its factorization.

12213002173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 12213002173 its reverse (37120031221), we get a palindrome (49333033394).

The spelling of 12213002173 in words is "twelve billion, two hundred thirteen million, two thousand, one hundred seventy-three".