12122838 has 64 divisors (see below), whose sum is σ = 33169920. Its totient is φ = 3195936.

The previous prime is 12122833. The next prime is 12122843. The reversal of 12122838 is 83822121.

It is an interprime number because it is at equal distance from previous prime (12122833) and next prime (12122843).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3681 + ... + 6147.

It is an arithmetic number, because the mean of its divisors is an integer number (518280).

Almost surely, 2^12122838 is an apocalyptic number.

12122838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16584960).

12122838 is an abundant number, since it is smaller than the sum of its proper divisors (21047082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122838 is a wasteful number, since it uses less digits than its factorization.

12122838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498 (or 2492 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12122838 is about 3481.7866103482. The cubic root of 12122838 is about 229.7213891687.

Adding to 12122838 its reverse (83822121), we get a palindrome (95944959).

The spelling of 12122838 in words is "twelve million, one hundred twenty-two thousand, eight hundred thirty-eight".