223221110121 has 16 divisors (see below), whose sum is σ = 336119221120. Its totient is φ = 146374497360.

The previous prime is 223221110107. The next prime is 223221110179. The reversal of 223221110121 is 121011122322.

It is not a de Polignac number, because 223221110121 - 2⁵ = 223221110089 is a prime.

It is a super-3 number, since 3×223221110121³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223221110094 and 223221110103.

It is not an unprimeable number, because it can be changed into a prime (223221110191) 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, 67764325 + ... + 67767618.

It is an arithmetic number, because the mean of its divisors is an integer number (21007451320).

Almost surely, 2^223221110121 is an apocalyptic number.

It is an amenable number.

223221110121 is a deficient number, since it is larger than the sum of its proper divisors (112898110999).

223221110121 is a wasteful number, since it uses less digits than its factorization.

223221110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135532013 (or 135532007 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 223221110121 its reverse (121011122322), we get a palindrome (344232232443).

The spelling of 223221110121 in words is "two hundred twenty-three billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".