221046346 has 8 divisors (see below), whose sum is σ = 331645860. Its totient is φ = 110497728.

The previous prime is 221046341. The next prime is 221046373. The reversal of 221046346 is 643640122.

221046346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161925625 + 59120721 = 12725^2 + 7689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221046346² = 97722974159903432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221046341) 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, 1170 + ... + 21058.

Almost surely, 2^221046346 is an apocalyptic number.

221046346 is a deficient number, since it is larger than the sum of its proper divisors (110599514).

221046346 is a wasteful number, since it uses less digits than its factorization.

221046346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25448.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 221046346 is about 14867.6274502693. The cubic root of 221046346 is about 604.6366198904.

Adding to 221046346 its reverse (643640122), we get a palindrome (864686468).

The spelling of 221046346 in words is "two hundred twenty-one million, forty-six thousand, three hundred forty-six".