12212619173 has 2 divisors, whose sum is σ = 12212619174. Its totient is φ = 12212619172.

The previous prime is 12212619161. The next prime is 12212619187. The reversal of 12212619173 is 37191621221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11313938689 + 898680484 = 106367^2 + 29978^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212619173 - 2⁸ = 12212618917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212612173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106309586 + 6106309587.

It is an arithmetic number, because the mean of its divisors is an integer number (6106309587).

Almost surely, 2^12212619173 is an apocalyptic number.

It is an amenable number.

12212619173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212619173 is an equidigital number, since it uses as much as digits as its factorization.

12212619173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The spelling of 12212619173 in words is "twelve billion, two hundred twelve million, six hundred nineteen thousand, one hundred seventy-three".