346120221 has 16 divisors (see below), whose sum is σ = 489283200. Its totient is φ = 216887808.

The previous prime is 346120219. The next prime is 346120253. The reversal of 346120221 is 122021643.

It is not a de Polignac number, because 346120221 - 2¹ = 346120219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38745 + ... + 46833.

It is an arithmetic number, because the mean of its divisors is an integer number (30580200).

Almost surely, 2^346120221 is an apocalyptic number.

It is an amenable number.

346120221 is a deficient number, since it is larger than the sum of its proper divisors (143162979).

346120221 is a wasteful number, since it uses less digits than its factorization.

346120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 346120221 is about 18604.3065175781. The cubic root of 346120221 is about 702.1161953262.

Adding to 346120221 its reverse (122021643), we get a palindrome (468141864).

The spelling of 346120221 in words is "three hundred forty-six million, one hundred twenty thousand, two hundred twenty-one".