110111221002121 has 4 divisors (see below), whose sum is σ = 110134194347412. Its totient is φ = 110088247656832.

The previous prime is 110111221002071. The next prime is 110111221002127. The reversal of 110111221002121 is 121200122111011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102907552880896 + 7203668121225 = 10144336^2 + 2683965^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111221002121 - 2²¹ = 110111218904969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111221002095 and 110111221002104.

It is not an unprimeable number, because it can be changed into a prime (110111221002127) 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, 11486665456 + ... + 11486675041.

It is an arithmetic number, because the mean of its divisors is an integer number (27533548586853).

Almost surely, 2^{110111221002121} is an apocalyptic number.

It is an amenable number.

110111221002121 is a deficient number, since it is larger than the sum of its proper divisors (22973345291).

110111221002121 is an equidigital number, since it uses as much as digits as its factorization.

110111221002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22973345290.

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

Adding to 110111221002121 its reverse (121200122111011), we get a palindrome (231311343113132).

The spelling of 110111221002121 in words is "one hundred ten trillion, one hundred eleven billion, two hundred twenty-one million, two thousand, one hundred twenty-one".