223202122021 has 2 divisors, whose sum is σ = 223202122022. Its totient is φ = 223202122020.

The previous prime is 223202122009. The next prime is 223202122057. The reversal of 223202122021 is 120221202322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186763129921 + 36438992100 = 432161^2 + 190890^2 .

It is a cyclic number.

It is not a de Polignac number, because 223202122021 - 2⁹ = 223202121509 is a prime.

It is a super-3 number, since 3×223202122021³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223202122021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223202122621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111601061010 + 111601061011.

It is an arithmetic number, because the mean of its divisors is an integer number (111601061011).

Almost surely, 2^223202122021 is an apocalyptic number.

It is an amenable number.

223202122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223202122021 is an equidigital number, since it uses as much as digits as its factorization.

223202122021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 223202122021 its reverse (120221202322), we get a palindrome (343423324343).

The spelling of 223202122021 in words is "two hundred twenty-three billion, two hundred two million, one hundred twenty-two thousand, twenty-one".