12011201112001 has 36 divisors (see below), whose sum is σ = 15687746396352. Its totient is φ = 9003190334112.

The previous prime is 12011201111993. The next prime is 12011201112013. The reversal of 12011201112001 is 10021110211021.

It is a happy number.

It is not a de Polignac number, because 12011201112001 - 2³ = 12011201111993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011201112041) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13635501 + ... + 14489626.

It is an arithmetic number, because the mean of its divisors is an integer number (435770733232).

Almost surely, 2^{12011201112001} is an apocalyptic number.

It is an amenable number.

12011201112001 is a deficient number, since it is larger than the sum of its proper divisors (3676545284351).

12011201112001 is a wasteful number, since it uses less digits than its factorization.

12011201112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125198 (or 28125166 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12011201112001 its reverse (10021110211021), we get a palindrome (22032311323022).

The spelling of 12011201112001 in words is "twelve trillion, eleven billion, two hundred one million, one hundred twelve thousand, one".