221101010110 has 16 divisors (see below), whose sum is σ = 399278181456. Its totient is φ = 88152323328.

The previous prime is 221101010089. The next prime is 221101010113. The reversal of 221101010110 is 11010101122.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221101010113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36006867 + ... + 36013006.

It is an arithmetic number, because the mean of its divisors is an integer number (24954886341).

Almost surely, 2^221101010110 is an apocalyptic number.

221101010110 is a deficient number, since it is larger than the sum of its proper divisors (178177171346).

221101010110 is a wasteful number, since it uses less digits than its factorization.

221101010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72020187.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 221101010110 its reverse (11010101122), we get a palindrome (232111111232).

It can be divided in two parts, 2 and 21101010110, that added together give a palindrome (21101010112).

The spelling of 221101010110 in words is "two hundred twenty-one billion, one hundred one million, ten thousand, one hundred ten".