122648947 has 2 divisors, whose sum is σ = 122648948. Its totient is φ = 122648946.

The previous prime is 122648941. The next prime is 122648959. The reversal of 122648947 is 749846221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122648947 - 2²³ = 114260339 is a prime.

It is equal to p_6983773 and since 122648947 and 6983773 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (122648941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61324473 + 61324474.

It is an arithmetic number, because the mean of its divisors is an integer number (61324474).

Almost surely, 2^122648947 is an apocalyptic number.

122648947 is a deficient number, since it is larger than the sum of its proper divisors (1).

122648947 is an equidigital number, since it uses as much as digits as its factorization.

122648947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 122648947 is about 11074.6985060542. The cubic root of 122648947 is about 496.8454015411.

The spelling of 122648947 in words is "one hundred twenty-two million, six hundred forty-eight thousand, nine hundred forty-seven".