1110110121221 has 4 divisors (see below), whose sum is σ = 1135926635712. Its totient is φ = 1084293606732.

The previous prime is 1110110121167. The next prime is 1110110121233. The reversal of 1110110121221 is 1221210110111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1110110121221 - 2⁶ = 1110110121157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110110121196 and 1110110121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110110121251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12908257181 + ... + 12908257266.

It is an arithmetic number, because the mean of its divisors is an integer number (283981658928).

Almost surely, 2^{1110110121221} is an apocalyptic number.

It is an amenable number.

1110110121221 is a deficient number, since it is larger than the sum of its proper divisors (25816514491).

1110110121221 is an equidigital number, since it uses as much as digits as its factorization.

1110110121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25816514490.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1110110121221 its reverse (1221210110111), we get a palindrome (2331320231332).

The spelling of 1110110121221 in words is "one trillion, one hundred ten billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty-one".