12001320111001 has 8 divisors (see below), whose sum is σ = 12925060569344. Its totient is φ = 11077659936720.

The previous prime is 12001320110951. The next prime is 12001320111013. The reversal of 12001320111001 is 10011102310021.

It is a happy number.

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

It is not a de Polignac number, because 12001320111001 - 2¹³ = 12001320102809 is a prime.

It is a super-2 number, since 2×12001320111001² (a number of 27 digits) contains 22 as substring.

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 (12001320111601) 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, 19760361 + ... + 20358646.

It is an arithmetic number, because the mean of its divisors is an integer number (1615632571168).

Almost surely, 2^{12001320111001} is an apocalyptic number.

It is an amenable number.

12001320111001 is a deficient number, since it is larger than the sum of its proper divisors (923740458343).

12001320111001 is a wasteful number, since it uses less digits than its factorization.

12001320111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40142031.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12001320111001 its reverse (10011102310021), we get a palindrome (22012422421022).

The spelling of 12001320111001 in words is "twelve trillion, one billion, three hundred twenty million, one hundred eleven thousand, one".