223200021 has 32 divisors (see below), whose sum is σ = 353075328. Its totient is φ = 123863040.

The previous prime is 223199939. The next prime is 223200067. The reversal of 223200021 is 120002322.

223200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 223200021 - 2¹⁴ = 223183637 is a prime.

It is a super-3 number, since 3×223200021³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223200121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15381 + ... + 26133.

It is an arithmetic number, because the mean of its divisors is an integer number (11033604).

Almost surely, 2^223200021 is an apocalyptic number.

It is an amenable number.

223200021 is a deficient number, since it is larger than the sum of its proper divisors (129875307).

223200021 is a wasteful number, since it uses less digits than its factorization.

223200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10821.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 223200021 is about 14939.8802204034. The cubic root of 223200021 is about 606.5939536019.

Adding to 223200021 its reverse (120002322), we get a palindrome (343202343).

The spelling of 223200021 in words is "two hundred twenty-three million, two hundred thousand, twenty-one".