12010021120 has 144 divisors (see below), whose sum is σ = 29543976000. Its totient is φ = 4676050944.

The previous prime is 12010021043. The next prime is 12010021151. The reversal of 12010021120 is 2112001021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12010021097 and 12010021106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8230951 + ... + 8232409.

It is an arithmetic number, because the mean of its divisors is an integer number (205166500).

Almost surely, 2^12010021120 is an apocalyptic number.

12010021120 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 12010021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14771988000).

12010021120 is an abundant number, since it is smaller than the sum of its proper divisors (17533954880).

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

12010021120 is a wasteful number, since it uses less digits than its factorization.

12010021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1634 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12010021120 its reverse (2112001021), we get a palindrome (14122022141).

The spelling of 12010021120 in words is "twelve billion, ten million, twenty-one thousand, one hundred twenty".