111221221011110 has 64 divisors (see below), whose sum is σ = 229039496653824. Its totient is φ = 38092741948800.

The previous prime is 111221221011097. The next prime is 111221221011133. The reversal of 111221221011110 is 11110122122111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488919095 + ... + 489146525.

It is an arithmetic number, because the mean of its divisors is an integer number (3578742135216).

Almost surely, 2^{111221221011110} is an apocalyptic number.

111221221011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111221221011110 is an abundant number, since it is smaller than the sum of its proper divisors (117818275642714).

111221221011110 is a wasteful number, since it uses less digits than its factorization.

111221221011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234789.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111221221011110 its reverse (11110122122111), we get a palindrome (122331343133221).

The spelling of 111221221011110 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, eleven thousand, one hundred ten".