222332021 has 4 divisors (see below), whose sum is σ = 224029344. Its totient is φ = 220634700.

The previous prime is 222331981. The next prime is 222332081. The reversal of 222332021 is 120233222.

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 222332021 - 2²⁶ = 155223157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222332081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848465 + ... + 848726.

It is an arithmetic number, because the mean of its divisors is an integer number (56007336).

Almost surely, 2^222332021 is an apocalyptic number.

It is an amenable number.

222332021 is a deficient number, since it is larger than the sum of its proper divisors (1697323).

222332021 is a wasteful number, since it uses less digits than its factorization.

222332021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697322.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 222332021 is about 14910.8021581671. The cubic root of 222332021 is about 605.8066066619.

Adding to 222332021 its reverse (120233222), we get a palindrome (342565243).

The spelling of 222332021 in words is "two hundred twenty-two million, three hundred thirty-two thousand, twenty-one".