12000020120 has 96 divisors (see below), whose sum is σ = 29892920400. Its totient is φ = 4332007680.

The previous prime is 12000020099. The next prime is 12000020141. The reversal of 12000020120 is 2102000021.

It is an interprime number because it is at equal distance from previous prime (12000020099) and next prime (12000020141).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 12000020098 and 12000020107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 663842 + ... + 681678.

Almost surely, 2^12000020120 is an apocalyptic number.

12000020120 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 12000020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14946460200).

12000020120 is an abundant number, since it is smaller than the sum of its proper divisors (17892900280).

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

12000020120 is a wasteful number, since it uses less digits than its factorization.

12000020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18009 (or 17994 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 12000020120 its reverse (2102000021), we get a palindrome (14102020141).

The spelling of 12000020120 in words is "twelve billion, twenty thousand, one hundred twenty".