223442221 has 8 divisors (see below), whose sum is σ = 224583840. Its totient is φ = 222304368.

The previous prime is 223442213. The next prime is 223442239. The reversal of 223442221 is 122244322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223442221 - 2³ = 223442213 is a prime.

It is a super-2 number, since 2×223442221² = 99852852250825682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223442192 and 223442201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223442201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259690 + ... + 260548.

It is an arithmetic number, because the mean of its divisors is an integer number (28072980).

Almost surely, 2^223442221 is an apocalyptic number.

It is an amenable number.

223442221 is a deficient number, since it is larger than the sum of its proper divisors (1141619).

223442221 is an equidigital number, since it uses as much as digits as its factorization.

223442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883.

The product of its digits is 1536, while the sum is 22.

The square root of 223442221 is about 14947.9838439838. The cubic root of 223442221 is about 606.8132844451.

Adding to 223442221 its reverse (122244322), we get a palindrome (345686543).

The spelling of 223442221 in words is "two hundred twenty-three million, four hundred forty-two thousand, two hundred twenty-one".