21103000010 has 16 divisors (see below), whose sum is σ = 38004157800. Its totient is φ = 8437031616.

The previous prime is 21102999989. The next prime is 21103000019. The reversal of 21103000010 is 1000030112.

It can be written as a sum of positive squares in 4 ways, for example, as 19418143801 + 1684856209 = 139349^2 + 41047^2 .

It is not an unprimeable number, because it can be changed into a prime (21103000019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499745 + ... + 540324.

Almost surely, 2^21103000010 is an apocalyptic number.

21103000010 is a deficient number, since it is larger than the sum of its proper divisors (16901157790).

21103000010 is a wasteful number, since it uses less digits than its factorization.

21103000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042105.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 21103000010 its reverse (1000030112), we get a palindrome (22103030122).

The spelling of 21103000010 in words is "twenty-one billion, one hundred three million, ten", and thus it is an aban number.