13021310012123 has 16 divisors (see below), whose sum is σ = 15135067200000. Its totient is φ = 10970978867712.

The previous prime is 13021310012107. The next prime is 13021310012131. The reversal of 13021310012123 is 32121001312031.

It is a happy number.

It is not a de Polignac number, because 13021310012123 - 2⁴ = 13021310012107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13021310012095 and 13021310012104.

It is not an unprimeable number, because it can be changed into a prime (13021310012023) 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, 3287378 + ... + 6070376.

It is an arithmetic number, because the mean of its divisors is an integer number (945941700000).

Almost surely, 2^{13021310012123} is an apocalyptic number.

13021310012123 is a deficient number, since it is larger than the sum of its proper divisors (2113757187877).

13021310012123 is a wasteful number, since it uses less digits than its factorization.

13021310012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794394.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13021310012123 its reverse (32121001312031), we get a palindrome (45142311324154).

The spelling of 13021310012123 in words is "thirteen trillion, twenty-one billion, three hundred ten million, twelve thousand, one hundred twenty-three".