221064352 has 24 divisors (see below), whose sum is σ = 435722112. Its totient is φ = 110404800.

The previous prime is 221064301. The next prime is 221064377. The reversal of 221064352 is 253460122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28227 + ... + 35197.

It is an arithmetic number, because the mean of its divisors is an integer number (18155088).

Almost surely, 2^221064352 is an apocalyptic number.

It is an amenable number.

221064352 is a deficient number, since it is larger than the sum of its proper divisors (214657760).

221064352 is an equidigital number, since it uses as much as digits as its factorization.

221064352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7972 (or 7964 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 221064352 is about 14868.2329817635. The cubic root of 221064352 is about 604.6530369474.

The spelling of 221064352 in words is "two hundred twenty-one million, sixty-four thousand, three hundred fifty-two".