12144202420 has 24 divisors (see below), whose sum is σ = 29146086144. Its totient is φ = 4163726496.

The previous prime is 12144202417. The next prime is 12144202463. The reversal of 12144202420 is 2420244121.

It is a junction number, because it is equal to n+sod(n) for n = 12144202391 and 12144202400.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 43372012 + ... + 43372291.

It is an arithmetic number, because the mean of its divisors is an integer number (1214420256).

Almost surely, 2^12144202420 is an apocalyptic number.

12144202420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12144202420 is an abundant number, since it is smaller than the sum of its proper divisors (17001883724).

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

12144202420 is a wasteful number, since it uses less digits than its factorization.

12144202420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86744319 (or 86744317 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12144202420 its reverse (2420244121), we get a palindrome (14564446541).

The spelling of 12144202420 in words is "twelve billion, one hundred forty-four million, two hundred two thousand, four hundred twenty".