122305215 has 8 divisors (see below), whose sum is σ = 195688368. Its totient is φ = 65229440.

The previous prime is 122305189. The next prime is 122305219. The reversal of 122305215 is 512503221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122305215 - 2⁷ = 122305087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122305191 and 122305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122305219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4076826 + ... + 4076855.

It is an arithmetic number, because the mean of its divisors is an integer number (24461046).

Almost surely, 2^122305215 is an apocalyptic number.

122305215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122305215 is a deficient number, since it is larger than the sum of its proper divisors (73383153).

122305215 is an equidigital number, since it uses as much as digits as its factorization.

122305215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153689.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 122305215 is about 11059.1688204856. The cubic root of 122305215 is about 496.3808196075.

Adding to 122305215 its reverse (512503221), we get a palindrome (634808436).

The spelling of 122305215 in words is "one hundred twenty-two million, three hundred five thousand, two hundred fifteen".