12104400134421 has 48 divisors (see below), whose sum is σ = 20192375863296. Its totient is φ = 6844041498528.

The previous prime is 12104400134419. The next prime is 12104400134479. The reversal of 12104400134421 is 12443100440121.

12104400134421 is a `hidden beast` number, since 1 + 2 + 104 + 4 + 0 + 0 + 134 + 421 = 666.

It is not a de Polignac number, because 12104400134421 - 2¹ = 12104400134419 is a prime.

It is a super-2 number, since 2×12104400134421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12104400134221) 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 47 ways as a sum of consecutive naturals, for example, 7173426 + ... + 8698668.

It is an arithmetic number, because the mean of its divisors is an integer number (420674497152).

Almost surely, 2^{12104400134421} is an apocalyptic number.

It is an amenable number.

12104400134421 is a deficient number, since it is larger than the sum of its proper divisors (8087975728875).

12104400134421 is a wasteful number, since it uses less digits than its factorization.

12104400134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526582 (or 1526579 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 12104400134421 its reverse (12443100440121), we get a palindrome (24547500574542).

The spelling of 12104400134421 in words is "twelve trillion, one hundred four billion, four hundred million, one hundred thirty-four thousand, four hundred twenty-one".