122318947 has 2 divisors, whose sum is σ = 122318948. Its totient is φ = 122318946.

The previous prime is 122318923. The next prime is 122318951. The reversal of 122318947 is 749813221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122318947 is a prime.

It is not a weakly prime, because it can be changed into another prime (122312947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61159473 + 61159474.

It is an arithmetic number, because the mean of its divisors is an integer number (61159474).

Almost surely, 2^122318947 is an apocalyptic number.

122318947 is a deficient number, since it is larger than the sum of its proper divisors (1).

122318947 is an equidigital number, since it uses as much as digits as its factorization.

122318947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 122318947 is about 11059.7896453775. The cubic root of 122318947 is about 496.3993962107.

It can be divided in two parts, 1223189 and 47, that added together give a square (1223236 = 1106²).

The spelling of 122318947 in words is "one hundred twenty-two million, three hundred eighteen thousand, nine hundred forty-seven".