21321033110 has 16 divisors (see below), whose sum is σ = 41330002896. Its totient is φ = 7872381408.

The previous prime is 21321033109. The next prime is 21321033127. The reversal of 21321033110 is 1133012312.

It is a congruent number.

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, 82003844 + ... + 82004103.

It is an arithmetic number, because the mean of its divisors is an integer number (2583125181).

Almost surely, 2^21321033110 is an apocalyptic number.

21321033110 is a deficient number, since it is larger than the sum of its proper divisors (20008969786).

21321033110 is a wasteful number, since it uses less digits than its factorization.

21321033110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164007967.

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

Adding to 21321033110 its reverse (1133012312), we get a palindrome (22454045422).

The spelling of 21321033110 in words is "twenty-one billion, three hundred twenty-one million, thirty-three thousand, one hundred ten".