122005215 has 24 divisors (see below), whose sum is σ = 215064720. Its totient is φ = 63965184.

The previous prime is 122005211. The next prime is 122005229. The reversal of 122005215 is 512500221.

It is not a de Polignac number, because 122005215 - 2² = 122005211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122005211) 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 23 ways as a sum of consecutive naturals, for example, 20322 + ... + 25631.

It is an arithmetic number, because the mean of its divisors is an integer number (8961030).

Almost surely, 2^122005215 is an apocalyptic number.

122005215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122005215 is a deficient number, since it is larger than the sum of its proper divisors (93059505).

122005215 is a wasteful number, since it uses less digits than its factorization.

122005215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46023 (or 46020 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 122005215 is about 11045.5970866223. The cubic root of 122005215 is about 495.9746331438.

Adding to 122005215 its reverse (512500221), we get a palindrome (634505436).

The spelling of 122005215 in words is "one hundred twenty-two million, five thousand, two hundred fifteen".