12143221040 has 80 divisors (see below), whose sum is σ = 30924672480. Its totient is φ = 4413911040.

The previous prime is 12143221037. The next prime is 12143221067. The reversal of 12143221040 is 4012234121.

12143221040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114506 + ... + 193385.

It is an arithmetic number, because the mean of its divisors is an integer number (386558406).

Almost surely, 2^12143221040 is an apocalyptic number.

12143221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143221040 is an abundant number, since it is smaller than the sum of its proper divisors (18781451440).

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

12143221040 is a wasteful number, since it uses less digits than its factorization.

12143221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307950 (or 307944 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12143221040 its reverse (4012234121), we get a palindrome (16155455161).

The spelling of 12143221040 in words is "twelve billion, one hundred forty-three million, two hundred twenty-one thousand, forty".