12111123131201 has 8 divisors (see below), whose sum is σ = 12567323317824. Its totient is φ = 11662856861040.

The previous prime is 12111123131171. The next prime is 12111123131231. The reversal of 12111123131201 is 10213132111121.

It is an interprime number because it is at equal distance from previous prime (12111123131171) and next prime (12111123131231).

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

It is a cyclic number.

It is not a de Polignac number, because 12111123131201 - 2¹⁰ = 12111123130177 is a prime.

It is a super-2 number, since 2×12111123131201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111123131231) 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, 1983476006 + ... + 1983482111.

It is an arithmetic number, because the mean of its divisors is an integer number (1570915414728).

Almost surely, 2^{12111123131201} is an apocalyptic number.

It is an amenable number.

12111123131201 is a deficient number, since it is larger than the sum of its proper divisors (456200186623).

12111123131201 is an equidigital number, since it uses as much as digits as its factorization.

12111123131201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966958231.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 12111123131201 its reverse (10213132111121), we get a palindrome (22324255242322).

The spelling of 12111123131201 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred one".