223312202221 has 2 divisors, whose sum is σ = 223312202222. Its totient is φ = 223312202220.

The previous prime is 223312202173. The next prime is 223312202251. The reversal of 223312202221 is 122202213322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200090709225 + 23221492996 = 447315^2 + 152386^2 .

It is a cyclic number.

It is not a de Polignac number, because 223312202221 - 2¹¹ = 223312200173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223312202192 and 223312202201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223312202251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111656101110 + 111656101111.

It is an arithmetic number, because the mean of its divisors is an integer number (111656101111).

Almost surely, 2^223312202221 is an apocalyptic number.

It is an amenable number.

223312202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

223312202221 is an equidigital number, since it uses as much as digits as its factorization.

223312202221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 223312202221 its reverse (122202213322), we get a palindrome (345514415543).

The spelling of 223312202221 in words is "two hundred twenty-three billion, three hundred twelve million, two hundred two thousand, two hundred twenty-one".