221011132 has 12 divisors (see below), whose sum is σ = 387991800. Its totient is φ = 110156336.

The previous prime is 221011123. The next prime is 221011157. The reversal of 221011132 is 231110122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85882 + ... + 88417.

It is an arithmetic number, because the mean of its divisors is an integer number (32332650).

Almost surely, 2^221011132 is an apocalyptic number.

It is an amenable number.

221011132 is a deficient number, since it is larger than the sum of its proper divisors (166980668).

221011132 is a wasteful number, since it uses less digits than its factorization.

221011132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174620 (or 174618 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221011132 is about 14866.4431522809. The cubic root of 221011132 is about 604.6045107798.

Adding to 221011132 its reverse (231110122), we get a palindrome (452121254).

The spelling of 221011132 in words is "two hundred twenty-one million, eleven thousand, one hundred thirty-two".