122471647 has 2 divisors, whose sum is σ = 122471648. Its totient is φ = 122471646.

The previous prime is 122471639. The next prime is 122471651. The reversal of 122471647 is 746174221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122471647 - 2³ = 122471639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122471627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61235823 + 61235824.

It is an arithmetic number, because the mean of its divisors is an integer number (61235824).

Almost surely, 2^122471647 is an apocalyptic number.

122471647 is a deficient number, since it is larger than the sum of its proper divisors (1).

122471647 is an equidigital number, since it uses as much as digits as its factorization.

122471647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 34.

The square root of 122471647 is about 11066.6908784876. The cubic root of 122471647 is about 496.6058746267.

The spelling of 122471647 in words is "one hundred twenty-two million, four hundred seventy-one thousand, six hundred forty-seven".