352221013 has 2 divisors, whose sum is σ = 352221014. Its totient is φ = 352221012.

The previous prime is 352220969. The next prime is 352221029. The reversal of 352221013 is 310122253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308950929 + 43270084 = 17577^2 + 6578^2 .

It is a cyclic number.

It is not a de Polignac number, because 352221013 - 2¹³ = 352212821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352221043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176110506 + 176110507.

It is an arithmetic number, because the mean of its divisors is an integer number (176110507).

Almost surely, 2^352221013 is an apocalyptic number.

It is an amenable number.

352221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

352221013 is an equidigital number, since it uses as much as digits as its factorization.

352221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 352221013 is about 18767.5521312717. The cubic root of 352221013 is about 706.2174113138.

Adding to 352221013 its reverse (310122253), we get a palindrome (662343266).

The spelling of 352221013 in words is "three hundred fifty-two million, two hundred twenty-one thousand, thirteen".