223110021 has 16 divisors (see below), whose sum is σ = 308347200. Its totient is φ = 143326848.

The previous prime is 223109993. The next prime is 223110047. The reversal of 223110021 is 120011322.

It is not a de Polignac number, because 223110021 - 2¹⁰ = 223108997 is a prime.

It is a super-3 number, since 3×223110021³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223109979 and 223110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223110071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47250 + ... + 51756.

It is an arithmetic number, because the mean of its divisors is an integer number (19271700).

Almost surely, 2^223110021 is an apocalyptic number.

It is an amenable number.

223110021 is a deficient number, since it is larger than the sum of its proper divisors (85237179).

223110021 is a wasteful number, since it uses less digits than its factorization.

223110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 223110021 is about 14936.8678443642. The cubic root of 223110021 is about 606.5124112032.

Adding to 223110021 its reverse (120011322), we get a palindrome (343121343).

The spelling of 223110021 in words is "two hundred twenty-three million, one hundred ten thousand, twenty-one".