13220331302 has 4 divisors (see below), whose sum is σ = 19830496956. Its totient is φ = 6610165650.

The previous prime is 13220331263. The next prime is 13220331307. The reversal of 13220331302 is 20313302231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20313302231 = 52561 ⋅386471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220331307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305082824 + ... + 3305082827.

It is an arithmetic number, because the mean of its divisors is an integer number (4957624239).

Almost surely, 2^13220331302 is an apocalyptic number.

13220331302 is a deficient number, since it is larger than the sum of its proper divisors (6610165654).

13220331302 is an equidigital number, since it uses as much as digits as its factorization.

13220331302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610165653.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13220331302 its reverse (20313302231), we get a palindrome (33533633533).

The spelling of 13220331302 in words is "thirteen billion, two hundred twenty million, three hundred thirty-one thousand, three hundred two".