221122132 has 48 divisors (see below), whose sum is σ = 498032640. Its totient is φ = 83368800.

The previous prime is 221122127. The next prime is 221122141. The reversal of 221122132 is 231221122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2032 + ... + 21127.

It is an arithmetic number, because the mean of its divisors is an integer number (10375680).

Almost surely, 2^221122132 is an apocalyptic number.

221122132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221122132 is an abundant number, since it is smaller than the sum of its proper divisors (276910508).

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

221122132 is a wasteful number, since it uses less digits than its factorization.

221122132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23212 (or 23210 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 221122132 is about 14870.1759236399. The cubic root of 221122132 is about 604.7057121205.

Adding to 221122132 its reverse (231221122), we get a palindrome (452343254).

The spelling of 221122132 in words is "two hundred twenty-one million, one hundred twenty-two thousand, one hundred thirty-two".