21424200104 has 16 divisors (see below), whose sum is σ = 40459372800. Its totient is φ = 10635034032.

The previous prime is 21424200047. The next prime is 21424200113. The reversal of 21424200104 is 40100242412.

It is a super-2 number, since 2×21424200104² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9632072 + ... + 9634295.

It is an arithmetic number, because the mean of its divisors is an integer number (2528710800).

Almost surely, 2^21424200104 is an apocalyptic number.

It is an amenable number.

21424200104 is a deficient number, since it is larger than the sum of its proper divisors (19035172696).

21424200104 is a wasteful number, since it uses less digits than its factorization.

21424200104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19266512 (or 19266508 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21424200104 its reverse (40100242412), we get a palindrome (61524442516).

The spelling of 21424200104 in words is "twenty-one billion, four hundred twenty-four million, two hundred thousand, one hundred four".