21003330002 has 4 divisors (see below), whose sum is σ = 31504995006. Its totient is φ = 10501665000.

The previous prime is 21003329993. The next prime is 21003330013. The reversal of 21003330002 is 20003330012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11180736121 + 9822593881 = 105739^2 + 99109^2 .

It is a super-2 number, since 2×21003330002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250832499 + ... + 5250832502.

Almost surely, 2^21003330002 is an apocalyptic number.

21003330002 is a deficient number, since it is larger than the sum of its proper divisors (10501665004).

21003330002 is a wasteful number, since it uses less digits than its factorization.

21003330002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10501665003.

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 21003330002 its reverse (20003330012), we get a palindrome (41006660014).

The spelling of 21003330002 in words is "twenty-one billion, three million, three hundred thirty thousand, two".