223322220221 has 4 divisors (see below), whose sum is σ = 223336031100. Its totient is φ = 223308409344.

The previous prime is 223322220167. The next prime is 223322220223. The reversal of 223322220221 is 122022223322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129143203225 + 94179016996 = 359365^2 + 306886^2 .

It is a cyclic number.

It is not a de Polignac number, because 223322220221 - 2¹⁸ = 223321958077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223322220223) 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, 6881156 + ... + 6913533.

It is an arithmetic number, because the mean of its divisors is an integer number (55834007775).

Almost surely, 2^223322220221 is an apocalyptic number.

It is an amenable number.

223322220221 is a deficient number, since it is larger than the sum of its proper divisors (13810879).

223322220221 is a wasteful number, since it uses less digits than its factorization.

223322220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13810878.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 223322220221 its reverse (122022223322), we get a palindrome (345344443543).

The spelling of 223322220221 in words is "two hundred twenty-three billion, three hundred twenty-two million, two hundred twenty thousand, two hundred twenty-one".