21300032002 has 8 divisors (see below), whose sum is σ = 32040559116. Its totient is φ = 10619845632.

The previous prime is 21300031979. The next prime is 21300032093. The reversal of 21300032002 is 20023000312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20064439201 + 1235592801 = 141649^2 + 35151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 15084303 + ... + 15085714.

Almost surely, 2^21300032002 is an apocalyptic number.

21300032002 is a deficient number, since it is larger than the sum of its proper divisors (10740527114).

21300032002 is a wasteful number, since it uses less digits than its factorization.

21300032002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30170372.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21300032002 its reverse (20023000312), we get a palindrome (41323032314).

The spelling of 21300032002 in words is "twenty-one billion, three hundred million, thirty-two thousand, two".