122257867 has 4 divisors (see below), whose sum is σ = 123137560. Its totient is φ = 121378176.

The previous prime is 122257843. The next prime is 122257873. The reversal of 122257867 is 768752221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768752221 = 113 ⋅6803117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122257867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122257067) 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 in 3 ways as a sum of consecutive naturals, for example, 439638 + ... + 439915.

It is an arithmetic number, because the mean of its divisors is an integer number (30784390).

Almost surely, 2^122257867 is an apocalyptic number.

122257867 is a deficient number, since it is larger than the sum of its proper divisors (879693).

122257867 is an equidigital number, since it uses as much as digits as its factorization.

122257867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879692.

The product of its digits is 94080, while the sum is 40.

The square root of 122257867 is about 11057.0279460622. The cubic root of 122257867 is about 496.3167567286.

The spelling of 122257867 in words is "one hundred twenty-two million, two hundred fifty-seven thousand, eight hundred sixty-seven".