12121122112122 has 16 divisors (see below), whose sum is σ = 25668258590592. Its totient is φ = 3802704976320.

The previous prime is 12121122112103. The next prime is 12121122112123. The reversal of 12121122112122 is 22121122112121.

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

It is not an unprimeable number, because it can be changed into a prime (12121122112123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59417265154 + ... + 59417265357.

It is an arithmetic number, because the mean of its divisors is an integer number (1604266161912).

Almost surely, 2^{12121122112122} is an apocalyptic number.

12121122112122 is an abundant number, since it is smaller than the sum of its proper divisors (13547136478470).

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

12121122112122 is a wasteful number, since it uses less digits than its factorization.

12121122112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118834530533.

The product of its digits is 128, while the sum is 21.

Adding to 12121122112122 its reverse (22121122112121), we get a palindrome (34242244224243).

Subtracting 12121122112122 from its reverse (22121122112121), we obtain a palindrome (9999999999999).

The spelling of 12121122112122 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-two".