132221261 has 2 divisors, whose sum is σ = 132221262. Its totient is φ = 132221260.

The previous prime is 132221233. The next prime is 132221267. The reversal of 132221261 is 162122231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122102500 + 10118761 = 11050^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 132221261 - 2⁶ = 132221197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132221267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66110630 + 66110631.

It is an arithmetic number, because the mean of its divisors is an integer number (66110631).

Almost surely, 2^132221261 is an apocalyptic number.

It is an amenable number.

132221261 is a deficient number, since it is larger than the sum of its proper divisors (1).

132221261 is an equidigital number, since it uses as much as digits as its factorization.

132221261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 132221261 is about 11498.7504103707. The cubic root of 132221261 is about 509.4486685879.

Adding to 132221261 its reverse (162122231), we get a palindrome (294343492).

The spelling of 132221261 in words is "one hundred thirty-two million, two hundred twenty-one thousand, two hundred sixty-one".