352212121 has 2 divisors, whose sum is σ = 352212122. Its totient is φ = 352212120.

The previous prime is 352212089. The next prime is 352212127. The reversal of 352212121 is 121212253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344622096 + 7590025 = 18564^2 + 2755^2 .

It is an emirp because it is prime and its reverse (121212253) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 352212121 - 2⁵ = 352212089 is a prime.

It is not a weakly prime, because it can be changed into another prime (352212127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176106060 + 176106061.

It is an arithmetic number, because the mean of its divisors is an integer number (176106061).

Almost surely, 2^352212121 is an apocalyptic number.

It is an amenable number.

352212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

352212121 is an equidigital number, since it uses as much as digits as its factorization.

352212121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 352212121 is about 18767.3152315402. The cubic root of 352212121 is about 706.2114683236.

Adding to 352212121 its reverse (121212253), we get a palindrome (473424374).

The spelling of 352212121 in words is "three hundred fifty-two million, two hundred twelve thousand, one hundred twenty-one".