12404012221100 has 72 divisors (see below), whose sum is σ = 27014362272240. Its totient is φ = 4943611111680.

The previous prime is 12404012221093. The next prime is 12404012221109. The reversal of 12404012221100 is 112221040421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12404012221109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 144493991 + ... + 144579809.

Almost surely, 2^{12404012221100} is an apocalyptic number.

12404012221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12404012221100 is an abundant number, since it is smaller than the sum of its proper divisors (14610350051140).

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

12404012221100 is a wasteful number, since it uses less digits than its factorization.

12404012221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91059 (or 91052 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12404012221100 its reverse (112221040421), we get a palindrome (12516233261521).

The spelling of 12404012221100 in words is "twelve trillion, four hundred four billion, twelve million, two hundred twenty-one thousand, one hundred".