12404402110221 has 16 divisors (see below), whose sum is σ = 18992386007040. Its totient is φ = 7122144751920.

The previous prime is 12404402110211. The next prime is 12404402110223. The reversal of 12404402110221 is 12201120440421.

It is a happy number.

It is not a de Polignac number, because 12404402110221 - 2¹¹ = 12404402108173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12404402110191 and 12404402110200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404402110223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9891867085 + ... + 9891868338.

It is an arithmetic number, because the mean of its divisors is an integer number (1187024125440).

Almost surely, 2^{12404402110221} is an apocalyptic number.

12404402110221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12404402110221 is a deficient number, since it is larger than the sum of its proper divisors (6587983896819).

12404402110221 is a wasteful number, since it uses less digits than its factorization.

12404402110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783735456.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12404402110221 its reverse (12201120440421), we get a palindrome (24605522550642).

The spelling of 12404402110221 in words is "twelve trillion, four hundred four billion, four hundred two million, one hundred ten thousand, two hundred twenty-one".