13220111123 has 2 divisors, whose sum is σ = 13220111124. Its totient is φ = 13220111122.

The previous prime is 13220111119. The next prime is 13220111131. The reversal of 13220111123 is 32111102231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13220111123 - 2² = 13220111119 is a prime.

It is a super-2 number, since 2×13220111123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13220111173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610055561 + 6610055562.

It is an arithmetic number, because the mean of its divisors is an integer number (6610055562).

Almost surely, 2^13220111123 is an apocalyptic number.

13220111123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220111123 is an equidigital number, since it uses as much as digits as its factorization.

13220111123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13220111123 its reverse (32111102231), we get a palindrome (45331213354).

The spelling of 13220111123 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty-three".