110111112122221 has 16 divisors (see below), whose sum is σ = 127376520856704. Its totient is φ = 93229856745984.

The previous prime is 110111112122203. The next prime is 110111112122227. The reversal of 110111112122221 is 122221211111011.

It is not a de Polignac number, because 110111112122221 - 2⁹ = 110111112121709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111112122227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10323496 + ... + 18077521.

It is an arithmetic number, because the mean of its divisors is an integer number (7961032553544).

Almost surely, 2^{110111112122221} is an apocalyptic number.

It is an amenable number.

110111112122221 is a deficient number, since it is larger than the sum of its proper divisors (17265408734483).

110111112122221 is an equidigital number, since it uses as much as digits as its factorization.

110111112122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28407780.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 110111112122221 its reverse (122221211111011), we get a palindrome (232332323233232).

The spelling of 110111112122221 in words is "one hundred ten trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".