132121321 has 4 divisors (see below), whose sum is σ = 132698500. Its totient is φ = 131544144.

The previous prime is 132121271. The next prime is 132121343. The reversal of 132121321 is 123121231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123121231 = 23 ⋅5353097.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 51768025 = 8964^2 + 7195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132121321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 132121295 and 132121304.

It is not an unprimeable number, because it can be changed into a prime (132121391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288246 + ... + 288703.

It is an arithmetic number, because the mean of its divisors is an integer number (33174625).

Almost surely, 2^132121321 is an apocalyptic number.

It is an amenable number.

132121321 is a deficient number, since it is larger than the sum of its proper divisors (577179).

132121321 is an equidigital number, since it uses as much as digits as its factorization.

132121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577178.

The product of its digits is 72, while the sum is 16.

The square root of 132121321 is about 11494.4038992894. The cubic root of 132121321 is about 509.3202799236.

Adding to 132121321 its reverse (123121231), we get a palindrome (255242552).

The spelling of 132121321 in words is "one hundred thirty-two million, one hundred twenty-one thousand, three hundred twenty-one".