221067056 has 20 divisors (see below), whose sum is σ = 489505872. Its totient is φ = 94742976.

The previous prime is 221067047. The next prime is 221067061. The reversal of 221067056 is 650760122.

221067056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 986795 + ... + 987018.

Almost surely, 2^221067056 is an apocalyptic number.

It is an amenable number.

221067056 is an abundant number, since it is smaller than the sum of its proper divisors (268438816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221067056 is a wasteful number, since it uses less digits than its factorization.

221067056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973828 (or 1973822 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 221067056 is about 14868.3239136091. The cubic root of 221067056 is about 604.6555022554.

The spelling of 221067056 in words is "two hundred twenty-one million, sixty-seven thousand, fifty-six".