221233552 has 20 divisors (see below), whose sum is σ = 430163440. Its totient is φ = 110223648.

The previous prime is 221233541. The next prime is 221233553. The reversal of 221233552 is 255332122.

It is not an unprimeable number, because it can be changed into a prime (221233553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19902 + ... + 28957.

It is an arithmetic number, because the mean of its divisors is an integer number (21508172).

Almost surely, 2^221233552 is an apocalyptic number.

It is an amenable number.

221233552 is a deficient number, since it is larger than the sum of its proper divisors (208929888).

221233552 is a wasteful number, since it uses less digits than its factorization.

221233552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49150 (or 49144 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 221233552 is about 14873.9218768958. The cubic root of 221233552 is about 604.8072623308.

Adding to 221233552 its reverse (255332122), we get a palindrome (476565674).

The spelling of 221233552 in words is "two hundred twenty-one million, two hundred thirty-three thousand, five hundred fifty-two".