12002121200120 has 128 divisors (see below), whose sum is σ = 29411127432000. Its totient is φ = 4390615756800.

The previous prime is 12002121200039. The next prime is 12002121200143. The reversal of 12002121200120 is 2100212120021.

It is a junction number, because it is equal to n+sod(n) for n = 12002121200095 and 12002121200104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144386570 + ... + 144469670.

Almost surely, 2^{12002121200120} is an apocalyptic number.

12002121200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12002121200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14705563716000).

12002121200120 is an abundant number, since it is smaller than the sum of its proper divisors (17409006231880).

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

12002121200120 is a wasteful number, since it uses less digits than its factorization.

12002121200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89713 (or 89709 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12002121200120 its reverse (2100212120021), we get a palindrome (14102333320141).

The spelling of 12002121200120 in words is "twelve trillion, two billion, one hundred twenty-one million, two hundred thousand, one hundred twenty".