355300221 has 16 divisors (see below), whose sum is σ = 502317504. Its totient is φ = 222614784.

The previous prime is 355300217. The next prime is 355300243. The reversal of 355300221 is 122003553.

It is not a de Polignac number, because 355300221 - 2² = 355300217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355300201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34006 + ... + 43208.

It is an arithmetic number, because the mean of its divisors is an integer number (31394844).

Almost surely, 2^355300221 is an apocalyptic number.

It is an amenable number.

355300221 is a deficient number, since it is larger than the sum of its proper divisors (147017283).

355300221 is a wasteful number, since it uses less digits than its factorization.

355300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9980.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 355300221 is about 18849.4090358292. The cubic root of 355300221 is about 708.2694221029.

Adding to 355300221 its reverse (122003553), we get a palindrome (477303774).

The spelling of 355300221 in words is "three hundred fifty-five million, three hundred thousand, two hundred twenty-one".