122217287 has 2 divisors, whose sum is σ = 122217288. Its totient is φ = 122217286.

The previous prime is 122217259. The next prime is 122217299. The reversal of 122217287 is 782712221.

It is a strong prime.

It is an emirp because it is prime and its reverse (782712221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122217287 - 2¹⁸ = 121955143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122217787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61108643 + 61108644.

It is an arithmetic number, because the mean of its divisors is an integer number (61108644).

Almost surely, 2^122217287 is an apocalyptic number.

122217287 is a deficient number, since it is larger than the sum of its proper divisors (1).

122217287 is an equidigital number, since it uses as much as digits as its factorization.

122217287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 122217287 is about 11055.1927617749. The cubic root of 122217287 is about 496.2618379375.

The spelling of 122217287 in words is "one hundred twenty-two million, two hundred seventeen thousand, two hundred eighty-seven".