21013330202 has 8 divisors (see below), whose sum is σ = 31520615700. Its totient is φ = 10506458304.

The previous prime is 21013330189. The next prime is 21013330213. The reversal of 21013330202 is 20203331012.

It can be written as a sum of positive squares in 2 ways, for example, as 13581338521 + 7431991681 = 116539^2 + 86209^2 .

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, 121124 + ... + 238112.

Almost surely, 2^21013330202 is an apocalyptic number.

21013330202 is a deficient number, since it is larger than the sum of its proper divisors (10507285498).

21013330202 is a wasteful number, since it uses less digits than its factorization.

21013330202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206800.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21013330202 its reverse (20203331012), we get a palindrome (41216661214).

The spelling of 21013330202 in words is "twenty-one billion, thirteen million, three hundred thirty thousand, two hundred two".