122513647 has 2 divisors, whose sum is σ = 122513648. Its totient is φ = 122513646.

The previous prime is 122513641. The next prime is 122513669. The reversal of 122513647 is 746315221.

It is a weak prime.

It is an emirp because it is prime and its reverse (746315221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122513647 - 2³ = 122513639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122513641) 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, 61256823 + 61256824.

It is an arithmetic number, because the mean of its divisors is an integer number (61256824).

Almost surely, 2^122513647 is an apocalyptic number.

122513647 is a deficient number, since it is larger than the sum of its proper divisors (1).

122513647 is an equidigital number, since it uses as much as digits as its factorization.

122513647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 122513647 is about 11068.5883020374. The cubic root of 122513647 is about 496.6626362349.

Adding to 122513647 its reverse (746315221), we get a palindrome (868828868).

The spelling of 122513647 in words is "one hundred twenty-two million, five hundred thirteen thousand, six hundred forty-seven".