346224121 has 2 divisors, whose sum is σ = 346224122. Its totient is φ = 346224120.

The previous prime is 346224107. The next prime is 346224139. The reversal of 346224121 is 121422643.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237314025 + 108910096 = 15405^2 + 10436^2 .

It is an emirp because it is prime and its reverse (121422643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346224121 - 2²¹ = 344126969 is a prime.

It is a super-2 number, since 2×346224121² = 239742283924445282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (346221121) 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, 173112060 + 173112061.

It is an arithmetic number, because the mean of its divisors is an integer number (173112061).

Almost surely, 2^346224121 is an apocalyptic number.

It is an amenable number.

346224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

346224121 is an equidigital number, since it uses as much as digits as its factorization.

346224121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 346224121 is about 18607.0986722810. The cubic root of 346224121 is about 702.1864431476.

Adding to 346224121 its reverse (121422643), we get a palindrome (467646764).

The spelling of 346224121 in words is "three hundred forty-six million, two hundred twenty-four thousand, one hundred twenty-one".