132345221 has 4 divisors (see below), whose sum is σ = 140130252. Its totient is φ = 124560192.

The previous prime is 132345217. The next prime is 132345247. The reversal of 132345221 is 122543231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122543231 = 71 ⋅1725961.

It can be written as a sum of positive squares in 2 ways, for example, as 108472225 + 23872996 = 10415^2 + 4886^2 .

It is a cyclic number.

It is not a de Polignac number, because 132345221 - 2² = 132345217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132345721) 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, 3892490 + ... + 3892523.

It is an arithmetic number, because the mean of its divisors is an integer number (35032563).

Almost surely, 2^132345221 is an apocalyptic number.

It is an amenable number.

132345221 is a deficient number, since it is larger than the sum of its proper divisors (7785031).

132345221 is an equidigital number, since it uses as much as digits as its factorization.

132345221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785030.

The product of its digits is 1440, while the sum is 23.

The square root of 132345221 is about 11504.1392985308. The cubic root of 132345221 is about 509.6078248677.

Adding to 132345221 its reverse (122543231), we get a palindrome (254888452).

The spelling of 132345221 in words is "one hundred thirty-two million, three hundred forty-five thousand, two hundred twenty-one".