12220211173 has 2 divisors, whose sum is σ = 12220211174. Its totient is φ = 12220211172.

The previous prime is 12220211153. The next prime is 12220211231. The reversal of 12220211173 is 37111202221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11966828449 + 253382724 = 109393^2 + 15918^2 .

It is an emirp because it is prime and its reverse (37111202221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12220211173 - 2⁵ = 12220211141 is a prime.

It is a super-2 number, since 2×12220211173² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220211123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110105586 + 6110105587.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105587).

Almost surely, 2^12220211173 is an apocalyptic number.

It is an amenable number.

12220211173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220211173 is an equidigital number, since it uses as much as digits as its factorization.

12220211173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 12220211173 its reverse (37111202221), we get a palindrome (49331413394).

The spelling of 12220211173 in words is "twelve billion, two hundred twenty million, two hundred eleven thousand, one hundred seventy-three".