12222515 has 8 divisors (see below), whose sum is σ = 14812848. Its totient is φ = 9680800.

The previous prime is 12222461. The next prime is 12222517. The reversal of 12222515 is 51522221.

It is a happy number.

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

It is not a de Polignac number, because 12222515 - 2¹⁰ = 12221491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11597 + ... + 12606.

It is an arithmetic number, because the mean of its divisors is an integer number (1851606).

Almost surely, 2^12222515 is an apocalyptic number.

12222515 is a deficient number, since it is larger than the sum of its proper divisors (2590333).

12222515 is a wasteful number, since it uses less digits than its factorization.

12222515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24309.

The product of its digits is 400, while the sum is 20.

The square root of 12222515 is about 3496.0713665485. The cubic root of 12222515 is about 230.3492802751.

Adding to 12222515 its reverse (51522221), we get a palindrome (63744736).

The spelling of 12222515 in words is "twelve million, two hundred twenty-two thousand, five hundred fifteen".