12201185917 has 2 divisors, whose sum is σ = 12201185918. Its totient is φ = 12201185916.

The previous prime is 12201185903. The next prime is 12201185929. The reversal of 12201185917 is 71958110221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9966827556 + 2234358361 = 99834^2 + 47269^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201185917 - 2¹⁵ = 12201153149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201185987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100592958 + 6100592959.

It is an arithmetic number, because the mean of its divisors is an integer number (6100592959).

Almost surely, 2^12201185917 is an apocalyptic number.

It is an amenable number.

12201185917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201185917 is an equidigital number, since it uses as much as digits as its factorization.

12201185917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 37.

The spelling of 12201185917 in words is "twelve billion, two hundred one million, one hundred eighty-five thousand, nine hundred seventeen".