352230221 has 16 divisors (see below), whose sum is σ = 414892800. Its totient is φ = 292744320.

The previous prime is 352230217. The next prime is 352230239. The reversal of 352230221 is 122032253.

It is not a de Polignac number, because 352230221 - 2² = 352230217 is a prime.

It is a super-2 number, since 2×352230221² = 248132257171417682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 352230193 and 352230202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352230251) 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, 44255 + ... + 51603.

It is an arithmetic number, because the mean of its divisors is an integer number (25930800).

Almost surely, 2^352230221 is an apocalyptic number.

It is an amenable number.

352230221 is a deficient number, since it is larger than the sum of its proper divisors (62662579).

352230221 is a wasteful number, since it uses less digits than its factorization.

352230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7564.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 352230221 is about 18767.7974466904. The cubic root of 352230221 is about 706.2235653979.

Adding to 352230221 its reverse (122032253), we get a palindrome (474262474).

The spelling of 352230221 in words is "three hundred fifty-two million, two hundred thirty thousand, two hundred twenty-one".