2222171687 has 2 divisors, whose sum is σ = 2222171688. Its totient is φ = 2222171686.

The previous prime is 2222171683. The next prime is 2222171689. The reversal of 2222171687 is 7861712222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2222171687 - 2² = 2222171683 is a prime.

Together with 2222171689, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2222171687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222171681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111085843 + 1111085844.

It is an arithmetic number, because the mean of its divisors is an integer number (1111085844).

Almost surely, 2^2222171687 is an apocalyptic number.

2222171687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222171687 is an equidigital number, since it uses as much as digits as its factorization.

2222171687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 2222171687 is about 47139.9160690810. The cubic root of 2222171687 is about 1304.9459883793.

The spelling of 2222171687 in words is "two billion, two hundred twenty-two million, one hundred seventy-one thousand, six hundred eighty-seven".