21104133102442 has 192 divisors, whose sum is σ = 36893798645760. Its totient is φ = 8995410547200.

The previous prime is 21104133102421. The next prime is 21104133102449. The reversal of 21104133102442 is 24420133140112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21104133102442.

It is not an unprimeable number, because it can be changed into a prime (21104133102449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16500494359 + ... + 16500495637.

It is an arithmetic number, because the mean of its divisors is an integer number (192155201280).

Almost surely, 2^{21104133102442} is an apocalyptic number.

21104133102442 is a deficient number, since it is larger than the sum of its proper divisors (15789665543318).

21104133102442 is a wasteful number, since it uses less digits than its factorization.

21104133102442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21104133102442 its reverse (24420133140112), we get a palindrome (45524266242554).

The spelling of 21104133102442 in words is "twenty-one trillion, one hundred four billion, one hundred thirty-three million, one hundred two thousand, four hundred forty-two".