12122399 has 8 divisors (see below), whose sum is σ = 12915840. Its totient is φ = 11344536.

The previous prime is 12122389. The next prime is 12122401. The reversal of 12122399 is 99322121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122339) 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, 2267 + ... + 5420.

It is an arithmetic number, because the mean of its divisors is an integer number (1614480).

Almost surely, 2^12122399 is an apocalyptic number.

12122399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12122399 is a deficient number, since it is larger than the sum of its proper divisors (793441).

12122399 is an equidigital number, since it uses as much as digits as its factorization.

12122399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7789.

The product of its digits is 1944, while the sum is 29.

The square root of 12122399 is about 3481.7235674304. The cubic root of 12122399 is about 229.7186161957.

It can be divided in two parts, 12122 and 399, that added together give a palindrome (12521).

The spelling of 12122399 in words is "twelve million, one hundred twenty-two thousand, three hundred ninety-nine".