12122215 has 8 divisors (see below), whose sum is σ = 16624800. Its totient is φ = 8312352.

The previous prime is 12122191. The next prime is 12122221. The reversal of 12122215 is 51222121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12122215 - 2¹⁵ = 12089447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173140 + ... + 173209.

It is an arithmetic number, because the mean of its divisors is an integer number (2078100).

Almost surely, 2^12122215 is an apocalyptic number.

12122215 is a deficient number, since it is larger than the sum of its proper divisors (4502585).

12122215 is an equidigital number, since it uses as much as digits as its factorization.

12122215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346361.

The product of its digits is 80, while the sum is 16.

The square root of 12122215 is about 3481.6971436356. The cubic root of 12122215 is about 229.7174539274.

Adding to 12122215 its reverse (51222121), we get a palindrome (63344336).

The spelling of 12122215 in words is "twelve million, one hundred twenty-two thousand, two hundred fifteen".