13123444031121 has 8 divisors (see below), whose sum is σ = 17497946175424. Its totient is φ = 8748952287120.

The previous prime is 13123444031051. The next prime is 13123444031141. The reversal of 13123444031121 is 12113044432131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13123444031121 - 2¹⁰ = 13123444030097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13123444031141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1093956 + ... + 5238666.

It is an arithmetic number, because the mean of its divisors is an integer number (2187243271928).

Almost surely, 2^{13123444031121} is an apocalyptic number.

It is an amenable number.

13123444031121 is a deficient number, since it is larger than the sum of its proper divisors (4374502144303).

13123444031121 is a wasteful number, since it uses less digits than its factorization.

13123444031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200151.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 13123444031121 its reverse (12113044432131), we get a palindrome (25236488463252).

The spelling of 13123444031121 in words is "thirteen trillion, one hundred twenty-three billion, four hundred forty-four million, thirty-one thousand, one hundred twenty-one".