12015143000 has 192 divisors, whose sum is σ = 33163603200. Its totient is φ = 4061836800.

The previous prime is 12015142981. The next prime is 12015143003. The reversal of 12015143000 is 34151021.

It is a super-2 number, since 2×12015143000² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12015143000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015143003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3575321 + ... + 3578679.

It is an arithmetic number, because the mean of its divisors is an integer number (172727100).

Almost surely, 2^12015143000 is an apocalyptic number.

12015143000 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 12015143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16581801600).

12015143000 is an abundant number, since it is smaller than the sum of its proper divisors (21148460200).

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

12015143000 is a wasteful number, since it uses less digits than its factorization.

12015143000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3446 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 12015143000 its reverse (34151021), we get a palindrome (12049294021).

The spelling of 12015143000 in words is "twelve billion, fifteen million, one hundred forty-three thousand".