221120132 has 12 divisors (see below), whose sum is σ = 389123280. Its totient is φ = 109942056.

The previous prime is 221120129. The next prime is 221120149. The reversal of 221120132 is 231021122.

It is a happy number.

It is a super-2 number, since 2×221120132² = 97788225551394848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153698 + ... + 155129.

It is an arithmetic number, because the mean of its divisors is an integer number (32426940).

Almost surely, 2^221120132 is an apocalyptic number.

It is an amenable number.

221120132 is a deficient number, since it is larger than the sum of its proper divisors (168003148).

221120132 is a wasteful number, since it uses less digits than its factorization.

221120132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309010 (or 309008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221120132 is about 14870.1086747878. The cubic root of 221120132 is about 604.7038889726.

Adding to 221120132 its reverse (231021122), we get a palindrome (452141254).

The spelling of 221120132 in words is "two hundred twenty-one million, one hundred twenty thousand, one hundred thirty-two".