132206021 has 2 divisors, whose sum is σ = 132206022. Its totient is φ = 132206020.

The previous prime is 132206003. The next prime is 132206023. The reversal of 132206021 is 120602231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88830625 + 43375396 = 9425^2 + 6586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132206021 is a prime.

Together with 132206023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132206023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66103010 + 66103011.

It is an arithmetic number, because the mean of its divisors is an integer number (66103011).

Almost surely, 2^132206021 is an apocalyptic number.

It is an amenable number.

132206021 is a deficient number, since it is larger than the sum of its proper divisors (1).

132206021 is an equidigital number, since it uses as much as digits as its factorization.

132206021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 132206021 is about 11498.0877105717. The cubic root of 132206021 is about 509.4290945900.

Adding to 132206021 its reverse (120602231), we get a palindrome (252808252).

The spelling of 132206021 in words is "one hundred thirty-two million, two hundred six thousand, twenty-one".