132221221 has 16 divisors (see below), whose sum is σ = 148133376. Its totient is φ = 117000000.

The previous prime is 132221207. The next prime is 132221233. The reversal of 132221221 is 122122231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 132221221 - 2⁹ = 132220709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 132221195 and 132221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132221261) by changing a digit.

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, 66796 + ... + 68746.

It is an arithmetic number, because the mean of its divisors is an integer number (9258336).

Almost surely, 2^132221221 is an apocalyptic number.

132221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132221221 is a deficient number, since it is larger than the sum of its proper divisors (15912155).

132221221 is a wasteful number, since it uses less digits than its factorization.

132221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124.

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

The square root of 132221221 is about 11498.7486710511. The cubic root of 132221221 is about 509.4486172145.

Adding to 132221221 its reverse (122122231), we get a palindrome (254343452).

The spelling of 132221221 in words is "one hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-one".