12121112012122 has 8 divisors (see below), whose sum is σ = 18181956361716. Its totient is φ = 6060459891552.

The previous prime is 12121112012101. The next prime is 12121112012123. The reversal of 12121112012122 is 22121021112121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6986088620641 + 5135023391481 = 2643121^2 + 2266059^2 .

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 12121112012122.

It is not an unprimeable number, because it can be changed into a prime (12121112012123) 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, 47899513 + ... + 48151900.

Almost surely, 2^{12121112012122} is an apocalyptic number.

12121112012122 is a deficient number, since it is larger than the sum of its proper divisors (6060844349594).

12121112012122 is an equidigital number, since it uses as much as digits as its factorization.

12121112012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96114512.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12121112012122 its reverse (22121021112121), we get a palindrome (34242133124243).

Subtracting 12121112012122 from its reverse (22121021112121), we obtain a palindrome (9999909099999).

The spelling of 12121112012122 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, twelve thousand, one hundred twenty-two".