350221 has 4 divisors (see below), whose sum is σ = 365472. Its totient is φ = 334972.

The previous prime is 350219. The next prime is 350237. The reversal of 350221 is 122053.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 350221 - 2¹ = 350219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350281) 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, 7591 + ... + 7636.

It is an arithmetic number, because the mean of its divisors is an integer number (91368).

2³⁵⁰²²¹ is an apocalyptic number.

It is an amenable number.

350221 is a deficient number, since it is larger than the sum of its proper divisors (15251).

350221 is a wasteful number, since it uses less digits than its factorization.

350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15250.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 350221 is about 591.7947279251. The cubic root of 350221 is about 70.4878170857.

Adding to 350221 its reverse (122053), we get a palindrome (472274).

The spelling of 350221 in words is "three hundred fifty thousand, two hundred twenty-one".