122257865 has 4 divisors (see below), whose sum is σ = 146709444. Its totient is φ = 97806288.

The previous prime is 122257843. The next prime is 122257873. The reversal of 122257865 is 568752221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83978896 + 38278969 = 9164^2 + 6187^2 .

It is a cyclic number.

It is not a de Polignac number, because 122257865 - 2⁶ = 122257801 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12225782 + ... + 12225791.

It is an arithmetic number, because the mean of its divisors is an integer number (36677361).

Almost surely, 2^122257865 is an apocalyptic number.

It is an amenable number.

122257865 is a deficient number, since it is larger than the sum of its proper divisors (24451579).

122257865 is an equidigital number, since it uses as much as digits as its factorization.

122257865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24451578.

The product of its digits is 67200, while the sum is 38.

The square root of 122257865 is about 11057.0278556220. The cubic root of 122257865 is about 496.3167540222.

The spelling of 122257865 in words is "one hundred twenty-two million, two hundred fifty-seven thousand, eight hundred sixty-five".