222021353 has 2 divisors, whose sum is σ = 222021354. Its totient is φ = 222021352.

The previous prime is 222021311. The next prime is 222021367. The reversal of 222021353 is 353120222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191462569 + 30558784 = 13837^2 + 5528^2 .

It is a cyclic number.

It is not a de Polignac number, because 222021353 - 2¹⁰ = 222020329 is a prime.

It is not a weakly prime, because it can be changed into another prime (222021953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010676 + 111010677.

It is an arithmetic number, because the mean of its divisors is an integer number (111010677).

Almost surely, 2^222021353 is an apocalyptic number.

It is an amenable number.

222021353 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021353 is an equidigital number, since it uses as much as digits as its factorization.

222021353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 222021353 is about 14900.3809682840. The cubic root of 222021353 is about 605.5243074612.

Adding to 222021353 its reverse (353120222), we get a palindrome (575141575).

The spelling of 222021353 in words is "two hundred twenty-two million, twenty-one thousand, three hundred fifty-three".