12122112122 has 8 divisors (see below), whose sum is σ = 18209792736. Its totient is φ = 6052181212.

The previous prime is 12122112061. The next prime is 12122112131. The reversal of 12122112122 is 22121122121.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12122112122.

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, 4435718 + ... + 4438449.

It is an arithmetic number, because the mean of its divisors is an integer number (2276224092).

Almost surely, 2^12122112122 is an apocalyptic number.

12122112122 is a deficient number, since it is larger than the sum of its proper divisors (6087680614).

12122112122 is an equidigital number, since it uses as much as digits as its factorization.

12122112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8874852.

The product of its digits is 64, while the sum is 17.

Adding to 12122112122 its reverse (22121122121), we get a palindrome (34243234243).

Subtracting 12122112122 from its reverse (22121122121), we obtain a palindrome (9999009999).

The spelling of 12122112122 in words is "twelve billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-two".