12543022312000 has 112 divisors (see below), whose sum is σ = 31082956774272. Its totient is φ = 5013952396800.

The previous prime is 12543022311997. The next prime is 12543022312021. The reversal of 12543022312000 is 21322034521.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11835939 + ... + 12852061.

Almost surely, 2^{12543022312000} is an apocalyptic number.

12543022312000 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 12543022312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15541478387136).

12543022312000 is an abundant number, since it is smaller than the sum of its proper divisors (18539934462272).

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

12543022312000 is a wasteful number, since it uses less digits than its factorization.

12543022312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017693 (or 1017673 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 12543022312000 its reverse (21322034521), we get a palindrome (12564344346521).

The spelling of 12543022312000 in words is "twelve trillion, five hundred forty-three billion, twenty-two million, three hundred twelve thousand".