13220312122 has 4 divisors (see below), whose sum is σ = 19830468186. Its totient is φ = 6610156060.

The previous prime is 13220312033. The next prime is 13220312129. The reversal of 13220312122 is 22121302231.

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

It can be written as a sum of positive squares in only one way, i.e., 12038258961 + 1182053161 = 109719^2 + 34381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13220312122.

It is not an unprimeable number, because it can be changed into a prime (13220312129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305078029 + ... + 3305078032.

Almost surely, 2^13220312122 is an apocalyptic number.

13220312122 is a deficient number, since it is larger than the sum of its proper divisors (6610156064).

13220312122 is an equidigital number, since it uses as much as digits as its factorization.

13220312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610156063.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13220312122 its reverse (22121302231), we get a palindrome (35341614353).

The spelling of 13220312122 in words is "thirteen billion, two hundred twenty million, three hundred twelve thousand, one hundred twenty-two".