2221199163517 has 2 divisors, whose sum is σ = 2221199163518. Its totient is φ = 2221199163516.

The previous prime is 2221199163461. The next prime is 2221199163529. The reversal of 2221199163517 is 7153619911222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222906434201 + 998292729316 = 1105851^2 + 999146^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221199163517 - 2²⁷ = 2221064945789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221199163577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110599581758 + 1110599581759.

It is an arithmetic number, because the mean of its divisors is an integer number (1110599581759).

Almost surely, 2^{2221199163517} is an apocalyptic number.

It is an amenable number.

2221199163517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221199163517 is an equidigital number, since it uses as much as digits as its factorization.

2221199163517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The spelling of 2221199163517 in words is "two trillion, two hundred twenty-one billion, one hundred ninety-nine million, one hundred sixty-three thousand, five hundred seventeen".