13120123201311 has 32 divisors (see below), whose sum is σ = 21196210739200. Its totient is φ = 7051525048800.

The previous prime is 13120123201277. The next prime is 13120123201369. The reversal of 13120123201311 is 11310232102131.

It is not a de Polignac number, because 13120123201311 - 2¹⁰ = 13120123200287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120124201311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118226965 + ... + 118337886.

It is an arithmetic number, because the mean of its divisors is an integer number (662381585600).

Almost surely, 2^{13120123201311} is an apocalyptic number.

13120123201311 is a deficient number, since it is larger than the sum of its proper divisors (8076087537889).

13120123201311 is a wasteful number, since it uses less digits than its factorization.

13120123201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236565019.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 13120123201311 its reverse (11310232102131), we get a palindrome (24430355303442).

The spelling of 13120123201311 in words is "thirteen trillion, one hundred twenty billion, one hundred twenty-three million, two hundred one thousand, three hundred eleven".