122220247 has 2 divisors, whose sum is σ = 122220248. Its totient is φ = 122220246.

The previous prime is 122220227. The next prime is 122220251. The reversal of 122220247 is 742022221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (742022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122220247 - 2¹⁵ = 122187479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220227) 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, 61110123 + 61110124.

It is an arithmetic number, because the mean of its divisors is an integer number (61110124).

Almost surely, 2^122220247 is an apocalyptic number.

122220247 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220247 is an equidigital number, since it uses as much as digits as its factorization.

122220247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 122220247 is about 11055.3266347042. The cubic root of 122220247 is about 496.2658442534.

Adding to 122220247 its reverse (742022221), we get a palindrome (864242468).

The spelling of 122220247 in words is "one hundred twenty-two million, two hundred twenty thousand, two hundred forty-seven".