221345332 has 48 divisors (see below), whose sum is σ = 437860864. Its totient is φ = 97200000.

The previous prime is 221345323. The next prime is 221345387. The reversal of 221345332 is 233543122.

221345332 is nontrivially palindromic in base 3.

221345332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221345297 and 221345306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97207 + ... + 99457.

Almost surely, 2^221345332 is an apocalyptic number.

It is an amenable number.

221345332 is a deficient number, since it is larger than the sum of its proper divisors (216515532).

221345332 is a wasteful number, since it uses less digits than its factorization.

221345332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360 (or 2358 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 221345332 is about 14877.6789856483. The cubic root of 221345332 is about 604.9091063961.

Adding to 221345332 its reverse (233543122), we get a palindrome (454888454).

The spelling of 221345332 in words is "two hundred twenty-one million, three hundred forty-five thousand, three hundred thirty-two".