21311030010 has 16 divisors (see below), whose sum is σ = 51146472096. Its totient is φ = 5682941328.

The previous prime is 21311029991. The next prime is 21311030053. The reversal of 21311030010 is 1003011312.

It is an unprimeable number.

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, 355183804 + ... + 355183863.

It is an arithmetic number, because the mean of its divisors is an integer number (3196654506).

Almost surely, 2^21311030010 is an apocalyptic number.

21311030010 is an abundant number, since it is smaller than the sum of its proper divisors (29835442086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21311030010 is a wasteful number, since it uses less digits than its factorization.

21311030010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710367677.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21311030010 its reverse (1003011312), we get a palindrome (22314041322).

The spelling of 21311030010 in words is "twenty-one billion, three hundred eleven million, thirty thousand, ten".