132321021 has 12 divisors (see below), whose sum is σ = 205232832. Its totient is φ = 75611928.

The previous prime is 132320987. The next prime is 132321029. The reversal of 132321021 is 120123231.

It is not a de Polignac number, because 132321021 - 2¹⁷ = 132189949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132321029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449925 + ... + 450218.

It is an arithmetic number, because the mean of its divisors is an integer number (17102736).

Almost surely, 2^132321021 is an apocalyptic number.

It is an amenable number.

132321021 is a deficient number, since it is larger than the sum of its proper divisors (72911811).

132321021 is an equidigital number, since it uses as much as digits as its factorization.

132321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900160 (or 900153 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 132321021 is about 11503.0874551140. The cubic root of 132321021 is about 509.5767615092.

Adding to 132321021 its reverse (120123231), we get a palindrome (252444252).

It can be divided in two parts, 1323210 and 21, that added together give a palindrome (1323231).

The spelling of 132321021 in words is "one hundred thirty-two million, three hundred twenty-one thousand, twenty-one".