132021391 has 2 divisors, whose sum is σ = 132021392. Its totient is φ = 132021390.

The previous prime is 132021347. The next prime is 132021401. The reversal of 132021391 is 193120231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132021391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66010695 + 66010696.

It is an arithmetic number, because the mean of its divisors is an integer number (66010696).

Almost surely, 2^132021391 is an apocalyptic number.

132021391 is a deficient number, since it is larger than the sum of its proper divisors (1).

132021391 is an equidigital number, since it uses as much as digits as its factorization.

132021391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 132021391 is about 11490.0561791490. The cubic root of 132021391 is about 509.1918393550.

The spelling of 132021391 in words is "one hundred thirty-two million, twenty-one thousand, three hundred ninety-one".