12122427838 has 8 divisors (see below), whose sum is σ = 18363678120. Its totient is φ = 6001201800.

The previous prime is 12122427833. The next prime is 12122427841. The reversal of 12122427838 is 83872422121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12122427838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122427833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30005808 + ... + 30006211.

It is an arithmetic number, because the mean of its divisors is an integer number (2295459765).

Almost surely, 2^12122427838 is an apocalyptic number.

12122427838 is a deficient number, since it is larger than the sum of its proper divisors (6241250282).

12122427838 is a wasteful number, since it uses less digits than its factorization.

12122427838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60012122.

The product of its digits is 86016, while the sum is 40.

Adding to 12122427838 its reverse (83872422121), we get a palindrome (95994849959).

The spelling of 12122427838 in words is "twelve billion, one hundred twenty-two million, four hundred twenty-seven thousand, eight hundred thirty-eight".