221041232 has 10 divisors (see below), whose sum is σ = 428267418. Its totient is φ = 110520608.

The previous prime is 221041229. The next prime is 221041237. The reversal of 221041232 is 232140122.

221041232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 115691536 + 105349696 = 10756^2 + 10264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221041232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6907523 + ... + 6907554.

Almost surely, 2^221041232 is an apocalyptic number.

It is an amenable number.

221041232 is a deficient number, since it is larger than the sum of its proper divisors (207226186).

221041232 is a wasteful number, since it uses less digits than its factorization.

221041232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13815085 (or 13815079 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221041232 is about 14867.4554648736. The cubic root of 221041232 is about 604.6319570137.

Adding to 221041232 its reverse (232140122), we get a palindrome (453181354).

The spelling of 221041232 in words is "two hundred twenty-one million, forty-one thousand, two hundred thirty-two".