221122232 has 8 divisors (see below), whose sum is σ = 414604200. Its totient is φ = 110561112.

The previous prime is 221122193. The next prime is 221122259. The reversal of 221122232 is 232221122.

221122232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 221122232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13820132 + ... + 13820147.

It is an arithmetic number, because the mean of its divisors is an integer number (51825525).

Almost surely, 2^221122232 is an apocalyptic number.

It is an amenable number.

221122232 is a deficient number, since it is larger than the sum of its proper divisors (193481968).

221122232 is a wasteful number, since it uses less digits than its factorization.

221122232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27640285 (or 27640281 counting only the distinct ones).

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

The square root of 221122232 is about 14870.1792860745. The cubic root of 221122232 is about 604.7058032777.

Adding to 221122232 its reverse (232221122), we get a palindrome (453343354).

The spelling of 221122232 in words is "two hundred twenty-one million, one hundred twenty-two thousand, two hundred thirty-two".