12421131100440 has 64 divisors (see below), whose sum is σ = 38883540844800. Its totient is φ = 3168288511872.

The previous prime is 12421131100429. The next prime is 12421131100487. The reversal of 12421131100440 is 4400113112421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12421131100440.

It is a congruent number.

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, 2250202150 + ... + 2250207669.

It is an arithmetic number, because the mean of its divisors is an integer number (607555325700).

Almost surely, 2^{12421131100440} is an apocalyptic number.

12421131100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12421131100440 is an abundant number, since it is smaller than the sum of its proper divisors (26462409744360).

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

12421131100440 is a wasteful number, since it uses less digits than its factorization.

12421131100440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500409856 (or 4500409852 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 12421131100440 its reverse (4400113112421), we get a palindrome (16821244212861).

The spelling of 12421131100440 in words is "twelve trillion, four hundred twenty-one billion, one hundred thirty-one million, one hundred thousand, four hundred forty".