12001030320 has 160 divisors (see below), whose sum is σ = 39456046080. Its totient is φ = 3007098880.

The previous prime is 12001030313. The next prime is 12001030343. The reversal of 12001030320 is 2303010021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12001030296 and 12001030305.

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, 2931475 + ... + 2935565.

It is an arithmetic number, because the mean of its divisors is an integer number (246600288).

Almost surely, 2^12001030320 is an apocalyptic number.

12001030320 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 12001030320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19728023040).

12001030320 is an abundant number, since it is smaller than the sum of its proper divisors (27455015760).

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

12001030320 is a wasteful number, since it uses less digits than its factorization.

12001030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 12001030320 its reverse (2303010021), we get a palindrome (14304040341).

The spelling of 12001030320 in words is "twelve billion, one million, thirty thousand, three hundred twenty".