12122015 has 8 divisors (see below), whose sum is σ = 14746128. Its totient is φ = 9564480.

The previous prime is 12122009. The next prime is 12122021. The reversal of 12122015 is 51022121.

It is an interprime number because it is at equal distance from previous prime (12122009) and next prime (12122021).

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

It is a de Polignac number, because none of the positive numbers 2^k-12122015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 16241 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (1843266).

Almost surely, 2^12122015 is an apocalyptic number.

12122015 is a deficient number, since it is larger than the sum of its proper divisors (2624113).

12122015 is an equidigital number, since it uses as much as digits as its factorization.

12122015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33289.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12122015 is about 3481.6684218920. The cubic root of 12122015 is about 229.7161905790.

Adding to 12122015 its reverse (51022121), we get a palindrome (63144136).

The spelling of 12122015 in words is "twelve million, one hundred twenty-two thousand, fifteen".