21020211002 has 32 divisors (see below), whose sum is σ = 36783379200. Its totient is φ = 9005396400.

The previous prime is 21020210963. The next prime is 21020211011. The reversal of 21020211002 is 20011202012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496283 + ... + 3502289.

It is an arithmetic number, because the mean of its divisors is an integer number (1149480600).

Almost surely, 2^21020211002 is an apocalyptic number.

21020211002 is a deficient number, since it is larger than the sum of its proper divisors (15763168198).

21020211002 is an equidigital number, since it uses as much as digits as its factorization.

21020211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131 (or 11117 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21020211002 its reverse (20011202012), we get a palindrome (41031413014).

The spelling of 21020211002 in words is "twenty-one billion, twenty million, two hundred eleven thousand, two".