110111110121221 has 32 divisors (see below), whose sum is σ = 121045682862720. Its totient is φ = 99333145497600.

The previous prime is 110111110121189. The next prime is 110111110121239. The reversal of 110111110121221 is 122121011111011.

It is a cyclic number.

It is not a de Polignac number, because 110111110121221 - 2⁵ = 110111110121189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110111110121195 and 110111110121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111110181221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2243432401 + ... + 2243481481.

It is an arithmetic number, because the mean of its divisors is an integer number (3782677589460).

Almost surely, 2^{110111110121221} is an apocalyptic number.

110111110121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110111110121221 is a deficient number, since it is larger than the sum of its proper divisors (10934572741499).

110111110121221 is a wasteful number, since it uses less digits than its factorization.

110111110121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51637.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 110111110121221 its reverse (122121011111011), we get a palindrome (232232121232232).

The spelling of 110111110121221 in words is "one hundred ten trillion, one hundred eleven billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty-one".