12123321022122 has 32 divisors (see below), whose sum is σ = 24587466229248. Its totient is φ = 3984342068736.

The previous prime is 12123321022103. The next prime is 12123321022129. The reversal of 12123321022122 is 22122012332121.

It is a junction number, because it is equal to n+sod(n) for n = 12123321022092 and 12123321022101.

It is not an unprimeable number, because it can be changed into a prime (12123321022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3644218 + ... + 6125925.

It is an arithmetic number, because the mean of its divisors is an integer number (768358319664).

Almost surely, 2^{12123321022122} is an apocalyptic number.

12123321022122 is an abundant number, since it is smaller than the sum of its proper divisors (12464145207126).

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

12123321022122 is a wasteful number, since it uses less digits than its factorization.

12123321022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9773054.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 12123321022122 its reverse (22122012332121), we get a palindrome (34245333354243).

The spelling of 12123321022122 in words is "twelve trillion, one hundred twenty-three billion, three hundred twenty-one million, twenty-two thousand, one hundred twenty-two".