13000123331121 has 32 divisors (see below), whose sum is σ = 18151264631808. Its totient is φ = 8260553378880.

The previous prime is 13000123331089. The next prime is 13000123331161. The reversal of 13000123331121 is 12113332100031.

It is a happy number.

It is not a de Polignac number, because 13000123331121 - 2⁵ = 13000123331089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13000123331161) 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, 75049591 + ... + 75222611.

It is an arithmetic number, because the mean of its divisors is an integer number (567227019744).

Almost surely, 2^{13000123331121} is an apocalyptic number.

It is an amenable number.

13000123331121 is a deficient number, since it is larger than the sum of its proper divisors (5151141300687).

13000123331121 is a wasteful number, since it uses less digits than its factorization.

13000123331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176901.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 13000123331121 its reverse (12113332100031), we get a palindrome (25113455431152).

The spelling of 13000123331121 in words is "thirteen trillion, one hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-one".