21013204302 has 32 divisors (see below), whose sum is σ = 46701309600. Its totient is φ = 7003606464.

The previous prime is 21013204241. The next prime is 21013204321. The reversal of 21013204302 is 20340231012.

21013204302 is a `hidden beast` number, since 210 + 1 + 3 + 20 + 430 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 640474 + ... + 672482.

It is an arithmetic number, because the mean of its divisors is an integer number (1459415925).

Almost surely, 2^21013204302 is an apocalyptic number.

21013204302 is an abundant number, since it is smaller than the sum of its proper divisors (25688105298).

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

21013204302 is a wasteful number, since it uses less digits than its factorization.

21013204302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44177 (or 44171 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21013204302 its reverse (20340231012), we get a palindrome (41353435314).

The spelling of 21013204302 in words is "twenty-one billion, thirteen million, two hundred four thousand, three hundred two".