334641221 has 4 divisors (see below), whose sum is σ = 342803244. Its totient is φ = 326479200.

The previous prime is 334641169. The next prime is 334641253. The reversal of 334641221 is 122146433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122146433 = 4721 ⋅25873.

It can be written as a sum of positive squares in 2 ways, for example, as 120340900 + 214300321 = 10970^2 + 14639^2 .

It is a cyclic number.

It is not a de Polignac number, because 334641221 - 2¹⁰ = 334640197 is a prime.

It is a super-2 number, since 2×334641221² = 223969493584741682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (334641521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080950 + ... + 4081031.

It is an arithmetic number, because the mean of its divisors is an integer number (85700811).

Almost surely, 2^334641221 is an apocalyptic number.

It is an amenable number.

334641221 is a deficient number, since it is larger than the sum of its proper divisors (8162023).

334641221 is an equidigital number, since it uses as much as digits as its factorization.

334641221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162022.

The product of its digits is 3456, while the sum is 26.

The square root of 334641221 is about 18293.2014967310. The cubic root of 334641221 is about 694.2669295454.

Adding to 334641221 its reverse (122146433), we get a palindrome (456787654).

It can be divided in two parts, 3346412 and 21, that added together give a palindrome (3346433).

The spelling of 334641221 in words is "three hundred thirty-four million, six hundred forty-one thousand, two hundred twenty-one".