20321031221110 has 32 divisors (see below), whose sum is σ = 39199770700992. Its totient is φ = 7564868023680.

The previous prime is 20321031221093. The next prime is 20321031221123. The reversal of 20321031221110 is 1112213012302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1193941621 + ... + 1193958640.

It is an arithmetic number, because the mean of its divisors is an integer number (1224992834406).

Almost surely, 2^{20321031221110} is an apocalyptic number.

20321031221110 is a deficient number, since it is larger than the sum of its proper divisors (18878739479882).

20321031221110 is a wasteful number, since it uses less digits than its factorization.

20321031221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387900328.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20321031221110 its reverse (1112213012302), we get a palindrome (21433244233412).

The spelling of 20321031221110 in words is "twenty trillion, three hundred twenty-one billion, thirty-one million, two hundred twenty-one thousand, one hundred ten".