221383952 has 20 divisors (see below), whose sum is σ = 438907920. Its totient is φ = 108117408.

The previous prime is 221383949. The next prime is 221383957. The reversal of 221383952 is 259383122.

221383952 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221383957) 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, 160202 + ... + 161577.

It is an arithmetic number, because the mean of its divisors is an integer number (21945396).

Almost surely, 2^221383952 is an apocalyptic number.

It is an amenable number.

221383952 is a deficient number, since it is larger than the sum of its proper divisors (217523968).

221383952 is a wasteful number, since it uses less digits than its factorization.

221383952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321830 (or 321824 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 221383952 is about 14878.9768465443. The cubic root of 221383952 is about 604.9442855599.

The spelling of 221383952 in words is "two hundred twenty-one million, three hundred eighty-three thousand, nine hundred fifty-two".