122252789 has 2 divisors, whose sum is σ = 122252790. Its totient is φ = 122252788.

The previous prime is 122252731. The next prime is 122252791. The reversal of 122252789 is 987252221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 1582564 = 10985^2 + 1258^2 .

It is an emirp because it is prime and its reverse (987252221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122252789 - 2¹⁶ = 122187253 is a prime.

Together with 122252791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122252089) 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, 61126394 + 61126395.

It is an arithmetic number, because the mean of its divisors is an integer number (61126395).

Almost surely, 2^122252789 is an apocalyptic number.

It is an amenable number.

122252789 is a deficient number, since it is larger than the sum of its proper divisors (1).

122252789 is an equidigital number, since it uses as much as digits as its factorization.

122252789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 122252789 is about 11056.7983159683. The cubic root of 122252789 is about 496.3098851015.

The spelling of 122252789 in words is "one hundred twenty-two million, two hundred fifty-two thousand, seven hundred eighty-nine".