222032221 has 4 divisors (see below), whose sum is σ = 224707392. Its totient is φ = 219357052.

The previous prime is 222032219. The next prime is 222032249. The reversal of 222032221 is 122230222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222032221 - 2¹ = 222032219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222032195 and 222032204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222032821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1337461 + ... + 1337626.

It is an arithmetic number, because the mean of its divisors is an integer number (56176848).

Almost surely, 2^222032221 is an apocalyptic number.

It is an amenable number.

222032221 is a deficient number, since it is larger than the sum of its proper divisors (2675171).

222032221 is an equidigital number, since it uses as much as digits as its factorization.

222032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675170.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222032221 is about 14900.7456524833. The cubic root of 222032221 is about 605.5341874880.

Adding to 222032221 its reverse (122230222), we get a palindrome (344262443).

The spelling of 222032221 in words is "two hundred twenty-two million, thirty-two thousand, two hundred twenty-one".