21103331210 has 32 divisors (see below), whose sum is σ = 40974453072. Its totient is φ = 7779340800.

The previous prime is 21103331201. The next prime is 21103331213. The reversal of 21103331210 is 1213330112.

It can be written as a sum of positive squares in 8 ways, for example, as 3028410961 + 18074920249 = 55031^2 + 134443^2 .

It is not an unprimeable number, because it can be changed into a prime (21103331213) 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 15 ways as a sum of consecutive naturals, for example, 51341 + ... + 211760.

Almost surely, 2^21103331210 is an apocalyptic number.

21103331210 is a deficient number, since it is larger than the sum of its proper divisors (19871121862).

21103331210 is a wasteful number, since it uses less digits than its factorization.

21103331210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263738.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21103331210 its reverse (1213330112), we get a palindrome (22316661322).

The spelling of 21103331210 in words is "twenty-one billion, one hundred three million, three hundred thirty-one thousand, two hundred ten".