13212120313123 has 4 divisors (see below), whose sum is σ = 13409316138760. Its totient is φ = 13014924487488.

The previous prime is 13212120313109. The next prime is 13212120313157. The reversal of 13212120313123 is 32131302121231.

13212120313123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13212120313123 - 2³⁷ = 13074681359651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212120313723) 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, 98597912718 + ... + 98597912851.

It is an arithmetic number, because the mean of its divisors is an integer number (3352329034690).

Almost surely, 2^{13212120313123} is an apocalyptic number.

13212120313123 is a deficient number, since it is larger than the sum of its proper divisors (197195825637).

13212120313123 is an equidigital number, since it uses as much as digits as its factorization.

13212120313123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197195825636.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13212120313123 its reverse (32131302121231), we get a palindrome (45343422434354).

The spelling of 13212120313123 in words is "thirteen trillion, two hundred twelve billion, one hundred twenty million, three hundred thirteen thousand, one hundred twenty-three".