13022132213221 has 4 divisors (see below), whose sum is σ = 13094077695244. Its totient is φ = 12950186731200.

The previous prime is 13022132213213. The next prime is 13022132213227. The reversal of 13022132213221 is 12231223122031.

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 46928556900 + 12975203656321 = 216630^2 + 3602111^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022132213221 - 2³ = 13022132213213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13022132213227) 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, 35972740740 + ... + 35972741101.

It is an arithmetic number, because the mean of its divisors is an integer number (3273519423811).

Almost surely, 2^{13022132213221} is an apocalyptic number.

It is an amenable number.

13022132213221 is a deficient number, since it is larger than the sum of its proper divisors (71945482023).

13022132213221 is an equidigital number, since it uses as much as digits as its factorization.

13022132213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71945482022.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13022132213221 its reverse (12231223122031), we get a palindrome (25253355335252).

The spelling of 13022132213221 in words is "thirteen trillion, twenty-two billion, one hundred thirty-two million, two hundred thirteen thousand, two hundred twenty-one".