13122311011 has 4 divisors (see below), whose sum is σ = 13124138992. Its totient is φ = 13120483032.

The previous prime is 13122310987. The next prime is 13122311023. The reversal of 13122311011 is 11011322131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13122311011 - 2¹⁹ = 13121786723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13122312011) 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, 903180 + ... + 917593.

It is an arithmetic number, because the mean of its divisors is an integer number (3281034748).

Almost surely, 2^13122311011 is an apocalyptic number.

13122311011 is a deficient number, since it is larger than the sum of its proper divisors (1827981).

13122311011 is an equidigital number, since it uses as much as digits as its factorization.

13122311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827980.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13122311011 its reverse (11011322131), we get a palindrome (24133633142).

The spelling of 13122311011 in words is "thirteen billion, one hundred twenty-two million, three hundred eleven thousand, eleven".