110121120020221 has 16 divisors (see below), whose sum is σ = 113188193118000. Its totient is φ = 107058855817728.

The previous prime is 110121120020203. The next prime is 110121120020227. The reversal of 110121120020221 is 122020021121011.

It can be written as a sum of positive squares in 8 ways, for example, as 51552557960121 + 58568562060100 = 7180011^2 + 7653010^2 .

It is a cyclic number.

It is not a de Polignac number, because 110121120020221 - 2¹⁷ = 110121119889149 is a prime.

It is a super-2 number, since 2×110121120020221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121120020195 and 110121120020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121120020227) 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, 281885295 + ... + 282275683.

It is an arithmetic number, because the mean of its divisors is an integer number (7074262069875).

Almost surely, 2^{110121120020221} is an apocalyptic number.

It is an amenable number.

110121120020221 is a deficient number, since it is larger than the sum of its proper divisors (3067073097779).

110121120020221 is a wasteful number, since it uses less digits than its factorization.

110121120020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396528.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 110121120020221 its reverse (122020021121011), we get a palindrome (232141141141232).

The spelling of 110121120020221 in words is "one hundred ten trillion, one hundred twenty-one billion, one hundred twenty million, twenty thousand, two hundred twenty-one".