221221101110 has 32 divisors (see below), whose sum is σ = 407531263392. Its totient is φ = 86415114240.

The previous prime is 221221101109. The next prime is 221221101121. The reversal of 221221101110 is 11101122122.

221221101110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 2528822 + ... + 2614838.

It is an arithmetic number, because the mean of its divisors is an integer number (12735351981).

Almost surely, 2^221221101110 is an apocalyptic number.

221221101110 is a deficient number, since it is larger than the sum of its proper divisors (186310162282).

221221101110 is a wasteful number, since it uses less digits than its factorization.

221221101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92048.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221221101110 its reverse (11101122122), we get a palindrome (232322223232).

The spelling of 221221101110 in words is "two hundred twenty-one billion, two hundred twenty-one million, one hundred one thousand, one hundred ten".