21430332104 has 32 divisors (see below), whose sum is σ = 42326776800. Its totient is φ = 10143993600.

The previous prime is 21430332103. The next prime is 21430332109. The reversal of 21430332104 is 40123303412.

It is a self number, because there is not a number n which added to its sum of digits gives 21430332104.

It is not an unprimeable number, because it can be changed into a prime (21430332103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167504 + ... + 266304.

It is an arithmetic number, because the mean of its divisors is an integer number (1322711775).

Almost surely, 2^21430332104 is an apocalyptic number.

It is an amenable number.

21430332104 is a deficient number, since it is larger than the sum of its proper divisors (20896444696).

21430332104 is a wasteful number, since it uses less digits than its factorization.

21430332104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100253 (or 100249 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21430332104 its reverse (40123303412), we get a palindrome (61553635516).

The spelling of 21430332104 in words is "twenty-one billion, four hundred thirty million, three hundred thirty-two thousand, one hundred four".