12144333820 has 12 divisors (see below), whose sum is σ = 25503101064. Its totient is φ = 4857733520.

The previous prime is 12144333791. The next prime is 12144333823. The reversal of 12144333820 is 2833344121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144333823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303608326 + ... + 303608365.

It is an arithmetic number, because the mean of its divisors is an integer number (2125258422).

Almost surely, 2^12144333820 is an apocalyptic number.

12144333820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12144333820 is an abundant number, since it is smaller than the sum of its proper divisors (13358767244).

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

12144333820 is a wasteful number, since it uses less digits than its factorization.

12144333820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607216700 (or 607216698 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12144333820 its reverse (2833344121), we get a palindrome (14977677941).

The spelling of 12144333820 in words is "twelve billion, one hundred forty-four million, three hundred thirty-three thousand, eight hundred twenty".