221233232 has 40 divisors (see below), whose sum is σ = 468452160. Its totient is φ = 100378880.

The previous prime is 221233163. The next prime is 221233241. The reversal of 221233232 is 232332122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167069 + ... + 168387.

It is an arithmetic number, because the mean of its divisors is an integer number (11711304).

Almost surely, 2^221233232 is an apocalyptic number.

221233232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221233232 is an abundant number, since it is smaller than the sum of its proper divisors (247218928).

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

221233232 is a wasteful number, since it uses less digits than its factorization.

221233232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2285 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 221233232 is about 14873.9111198097. The cubic root of 221233232 is about 604.8069707258.

Adding to 221233232 its reverse (232332122), we get a palindrome (453565354).

The spelling of 221233232 in words is "two hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty-two".