132210821 has 2 divisors, whose sum is σ = 132210822. Its totient is φ = 132210820.

The previous prime is 132210769. The next prime is 132210847. The reversal of 132210821 is 128012231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66422500 + 65788321 = 8150^2 + 8111^2 .

It is a cyclic number.

It is not a de Polignac number, because 132210821 - 2¹⁰ = 132209797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 132210793 and 132210802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132230821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66105410 + 66105411.

It is an arithmetic number, because the mean of its divisors is an integer number (66105411).

Almost surely, 2^132210821 is an apocalyptic number.

It is an amenable number.

132210821 is a deficient number, since it is larger than the sum of its proper divisors (1).

132210821 is an equidigital number, since it uses as much as digits as its factorization.

132210821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 132210821 is about 11498.2964390383. The cubic root of 132210821 is about 509.4352597910.

The spelling of 132210821 in words is "one hundred thirty-two million, two hundred ten thousand, eight hundred twenty-one".