13123112323211 has 16 divisors (see below), whose sum is σ = 14625112094208. Its totient is φ = 11672763285600.

The previous prime is 13123112323171. The next prime is 13123112323231. The reversal of 13123112323211 is 11232321132131.

It is a cyclic number.

It is not a de Polignac number, because 13123112323211 - 2²⁶ = 13123045214347 is a prime.

It is a super-2 number, since 2×13123112323211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13123112323231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2088020 + ... + 5532273.

It is an arithmetic number, because the mean of its divisors is an integer number (914069505888).

Almost surely, 2^{13123112323211} is an apocalyptic number.

13123112323211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13123112323211 is a deficient number, since it is larger than the sum of its proper divisors (1501999770997).

13123112323211 is a wasteful number, since it uses less digits than its factorization.

13123112323211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623682.

The product of its digits is 1296, while the sum is 26.

Adding to 13123112323211 its reverse (11232321132131), we get a palindrome (24355433455342).

The spelling of 13123112323211 in words is "thirteen trillion, one hundred twenty-three billion, one hundred twelve million, three hundred twenty-three thousand, two hundred eleven".