12117422 has 8 divisors (see below), whose sum is σ = 18271872. Its totient is φ = 6026800.

The previous prime is 12117397. The next prime is 12117433. The reversal of 12117422 is 22471121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12117394 and 12117403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15479 + ... + 16242.

It is an arithmetic number, because the mean of its divisors is an integer number (2283984).

Almost surely, 2^12117422 is an apocalyptic number.

12117422 is a deficient number, since it is larger than the sum of its proper divisors (6154450).

12117422 is a wasteful number, since it uses less digits than its factorization.

12117422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31914.

The product of its digits is 224, while the sum is 20.

The square root of 12117422 is about 3481.0087618390. The cubic root of 12117422 is about 229.6871739579.

Adding to 12117422 its reverse (22471121), we get a palindrome (34588543).

The spelling of 12117422 in words is "twelve million, one hundred seventeen thousand, four hundred twenty-two".