132221021 has 2 divisors, whose sum is σ = 132221022. Its totient is φ = 132221020.

The previous prime is 132221009. The next prime is 132221039. The reversal of 132221021 is 120122231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128572921 + 3648100 = 11339^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 132221021 - 2¹⁴ = 132204637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 132220987 and 132221005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132221041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66110510 + 66110511.

It is an arithmetic number, because the mean of its divisors is an integer number (66110511).

Almost surely, 2^132221021 is an apocalyptic number.

It is an amenable number.

132221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

132221021 is an equidigital number, since it uses as much as digits as its factorization.

132221021 is an evil number, because the sum of its binary digits is even.

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

The square root of 132221021 is about 11498.7399744494. The cubic root of 132221021 is about 509.4483603476.

Adding to 132221021 its reverse (120122231), we get a palindrome (252343252).

It can be divided in two parts, 1322210 and 21, that added together give a palindrome (1322231).

The spelling of 132221021 in words is "one hundred thirty-two million, two hundred twenty-one thousand, twenty-one".