132231323021221 has 4 divisors (see below), whose sum is σ = 132231353606572. Its totient is φ = 132231292435872.

The previous prime is 132231323021177. The next prime is 132231323021227. The reversal of 132231323021221 is 122120323132231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68641639250625 + 63589683770596 = 8285025^2 + 7974314^2 .

It is a cyclic number.

It is not a de Polignac number, because 132231323021221 - 2⁴³ = 123435229999013 is a prime.

It is a super-2 number, since 2×132231323021221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 132231323021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132231323021227) 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, 7475760 + ... + 17898313.

It is an arithmetic number, because the mean of its divisors is an integer number (33057838401643).

Almost surely, 2^{132231323021221} is an apocalyptic number.

It is an amenable number.

132231323021221 is a deficient number, since it is larger than the sum of its proper divisors (30585351).

132231323021221 is an equidigital number, since it uses as much as digits as its factorization.

132231323021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30585350.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 132231323021221 its reverse (122120323132231), we get a palindrome (254351646153452).

The spelling of 132231323021221 in words is "one hundred thirty-two trillion, two hundred thirty-one billion, three hundred twenty-three million, twenty-one thousand, two hundred twenty-one".