221002232 has 16 divisors (see below), whose sum is σ = 452050200. Its totient is φ = 100455520.

The previous prime is 221002231. The next prime is 221002273. The reversal of 221002232 is 232200122.

221002232 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002231) 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, 1255607 + ... + 1255782.

Almost surely, 2^221002232 is an apocalyptic number.

221002232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221002232 is an abundant number, since it is smaller than the sum of its proper divisors (231047968).

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

221002232 is a wasteful number, since it uses less digits than its factorization.

221002232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2511406 (or 2511402 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 221002232 is about 14866.1438174128. The cubic root of 221002232 is about 604.5963949709.

Adding to 221002232 its reverse (232200122), we get a palindrome (453202354).

The spelling of 221002232 in words is "two hundred twenty-one million, two thousand, two hundred thirty-two".