13021320130123 has 4 divisors (see below), whose sum is σ = 13027853659528. Its totient is φ = 13014786600720.

The previous prime is 13021320130121. The next prime is 13021320130139. The reversal of 13021320130123 is 32103102312031.

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 13021320130123 - 2¹ = 13021320130121 is a prime.

It is a super-2 number, since 2×13021320130123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13021320130094 and 13021320130103.

It is not an unprimeable number, because it can be changed into a prime (13021320130121) 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, 3266761713 + ... + 3266765698.

It is an arithmetic number, because the mean of its divisors is an integer number (3256963414882).

Almost surely, 2^{13021320130123} is an apocalyptic number.

13021320130123 is a deficient number, since it is larger than the sum of its proper divisors (6533529405).

13021320130123 is an equidigital number, since it uses as much as digits as its factorization.

13021320130123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533529404.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13021320130123 its reverse (32103102312031), we get a palindrome (45124422442154).

The spelling of 13021320130123 in words is "thirteen trillion, twenty-one billion, three hundred twenty million, one hundred thirty thousand, one hundred twenty-three".