12204424122440 has 64 divisors (see below), whose sum is σ = 31718449877760. Its totient is φ = 4176915205120.

The previous prime is 12204424122431. The next prime is 12204424122469. The reversal of 12204424122440 is 4422142440221.

It is a super-2 number, since 2×12204424122440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12204424122397 and 12204424122406.

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, 815796272 + ... + 815811231.

It is an arithmetic number, because the mean of its divisors is an integer number (495600779340).

Almost surely, 2^{12204424122440} is an apocalyptic number.

12204424122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12204424122440 is an abundant number, since it is smaller than the sum of its proper divisors (19514025755320).

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

12204424122440 is a wasteful number, since it uses less digits than its factorization.

12204424122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631607542 (or 1631607538 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 12204424122440 its reverse (4422142440221), we get a palindrome (16626566562661).

The spelling of 12204424122440 in words is "twelve trillion, two hundred four billion, four hundred twenty-four million, one hundred twenty-two thousand, four hundred forty".