21010000210 has 32 divisors (see below), whose sum is σ = 39609077760. Its totient is φ = 8008701888.

The previous prime is 21010000199. The next prime is 21010000217. The reversal of 21010000210 is 1200001012.

It is a junction number, because it is equal to n+sod(n) for n = 21010000193 and 21010000202.

It is not an unprimeable number, because it can be changed into a prime (21010000217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107922 + ... + 231661.

It is an arithmetic number, because the mean of its divisors is an integer number (1237783680).

Almost surely, 2^21010000210 is an apocalyptic number.

21010000210 is a deficient number, since it is larger than the sum of its proper divisors (18599077550).

21010000210 is a wasteful number, since it uses less digits than its factorization.

21010000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339882.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 21010000210 its reverse (1200001012), we get a palindrome (22210001222).

The spelling of 21010000210 in words is "twenty-one billion, ten million, two hundred ten", and thus it is an aban number.