122500247 has 2 divisors, whose sum is σ = 122500248. Its totient is φ = 122500246.

The previous prime is 122500219. The next prime is 122500267. The reversal of 122500247 is 742005221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (742005221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122500247 is a prime.

It is a super-2 number, since 2×122500247² = 30012621030122018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122500267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61250123 + 61250124.

It is an arithmetic number, because the mean of its divisors is an integer number (61250124).

Almost surely, 2^122500247 is an apocalyptic number.

122500247 is a deficient number, since it is larger than the sum of its proper divisors (1).

122500247 is an equidigital number, since it uses as much as digits as its factorization.

122500247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 122500247 is about 11067.9829689063. The cubic root of 122500247 is about 496.6445279884.

Adding to 122500247 its reverse (742005221), we get a palindrome (864505468).

The spelling of 122500247 in words is "one hundred twenty-two million, five hundred thousand, two hundred forty-seven".