132121331 has 4 divisors (see below), whose sum is σ = 139893192. Its totient is φ = 124349472.

The previous prime is 132121271. The next prime is 132121343. The reversal of 132121331 is 133121231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133121231 = 521 ⋅255511.

It is a cyclic number.

It is not a de Polignac number, because 132121331 - 2¹⁸ = 131859187 is a prime.

It is a super-2 number, since 2×132121331² = 34912092210423122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7771843 = 132121331 / (1 + 3 + 2 + 1 + 2 + 1 + 3 + 3 + 1).

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3885905 + ... + 3885938.

It is an arithmetic number, because the mean of its divisors is an integer number (34973298).

Almost surely, 2^132121331 is an apocalyptic number.

132121331 is a deficient number, since it is larger than the sum of its proper divisors (7771861).

132121331 is an equidigital number, since it uses as much as digits as its factorization.

132121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771860.

The product of its digits is 108, while the sum is 17.

The square root of 132121331 is about 11494.4043342837. The cubic root of 132121331 is about 509.3202927734.

Adding to 132121331 its reverse (133121231), we get a palindrome (265242562).

The spelling of 132121331 in words is "one hundred thirty-two million, one hundred twenty-one thousand, three hundred thirty-one".