12201231173 has 2 divisors, whose sum is σ = 12201231174. Its totient is φ = 12201231172.

The previous prime is 12201231089. The next prime is 12201231247. The reversal of 12201231173 is 37113210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8122876129 + 4078355044 = 90127^2 + 63862^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201231173 - 2⁸ = 12201230917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201231073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100615586 + 6100615587.

It is an arithmetic number, because the mean of its divisors is an integer number (6100615587).

Almost surely, 2^12201231173 is an apocalyptic number.

It is an amenable number.

12201231173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201231173 is an equidigital number, since it uses as much as digits as its factorization.

12201231173 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 23.

Adding to 12201231173 its reverse (37113210221), we get a palindrome (49314441394).

The spelling of 12201231173 in words is "twelve billion, two hundred one million, two hundred thirty-one thousand, one hundred seventy-three".