221043952 has 20 divisors (see below), whose sum is σ = 428985936. Its totient is φ = 110337920.

The previous prime is 221043941. The next prime is 221043959. The reversal of 221043952 is 259340122.

221043952 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221043952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221043959) 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, 1324 + ... + 21067.

Almost surely, 2^221043952 is an apocalyptic number.

It is an amenable number.

221043952 is a deficient number, since it is larger than the sum of its proper divisors (207941984).

221043952 is a wasteful number, since it uses less digits than its factorization.

221043952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23016 (or 23010 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 221043952 is about 14867.5469395593. The cubic root of 221043952 is about 604.6344370822.

The spelling of 221043952 in words is "two hundred twenty-one million, forty-three thousand, nine hundred fifty-two".