122212215 has 24 divisors (see below), whose sum is σ = 212209920. Its totient is φ = 65064384.

The previous prime is 122212213. The next prime is 122212247. The reversal of 122212215 is 512212221.

It is not a de Polignac number, because 122212215 - 2¹ = 122212213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212213) 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, 27306 + ... + 31464.

It is an arithmetic number, because the mean of its divisors is an integer number (8842080).

Almost surely, 2^122212215 is an apocalyptic number.

122212215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122212215 is a deficient number, since it is larger than the sum of its proper divisors (89997705).

122212215 is a wasteful number, since it uses less digits than its factorization.

122212215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4820 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 122212215 is about 11054.9633649325. The cubic root of 122212215 is about 496.2549729107.

Adding to 122212215 its reverse (512212221), we get a palindrome (634424436).

The spelling of 122212215 in words is "one hundred twenty-two million, two hundred twelve thousand, two hundred fifteen".