12122415 has 12 divisors (see below), whose sum is σ = 21012264. Its totient is φ = 6465264.

The previous prime is 12122401. The next prime is 12122419. The reversal of 12122415 is 51422121.

It is not a de Polignac number, because 12122415 - 2¹⁹ = 11598127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134649 + ... + 134738.

It is an arithmetic number, because the mean of its divisors is an integer number (1751022).

Almost surely, 2^12122415 is an apocalyptic number.

12122415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12122415 is a deficient number, since it is larger than the sum of its proper divisors (8889849).

12122415 is a wasteful number, since it uses less digits than its factorization.

12122415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269398 (or 269395 counting only the distinct ones).

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

The square root of 12122415 is about 3481.7258651422. The cubic root of 12122415 is about 229.7187172619.

Adding to 12122415 its reverse (51422121), we get a palindrome (63544536).

The spelling of 12122415 in words is "twelve million, one hundred twenty-two thousand, four hundred fifteen".