12000121122220 has 48 divisors (see below), whose sum is σ = 31418498942208. Its totient is φ = 3740297492160.

The previous prime is 12000121122181. The next prime is 12000121122251. The reversal of 12000121122220 is 2222112100021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12000121122194 and 12000121122203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3896141682 + ... + 3896144761.

It is an arithmetic number, because the mean of its divisors is an integer number (654552061296).

Almost surely, 2^{12000121122220} is an apocalyptic number.

12000121122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000121122220 is an abundant number, since it is smaller than the sum of its proper divisors (19418377819988).

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

12000121122220 is a wasteful number, since it uses less digits than its factorization.

12000121122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792286470 (or 7792286468 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12000121122220 its reverse (2222112100021), we get a palindrome (14222233222241).

It can be divided in two parts, 1200012 and 1122220, that added together give a palindrome (2322232).

The spelling of 12000121122220 in words is "twelve trillion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".