12001001212111 has 8 divisors (see below), whose sum is σ = 12081651534720. Its totient is φ = 11920502063448.

The previous prime is 12001001212097. The next prime is 12001001212201. The reversal of 12001001212111 is 11121210010021.

It is a happy number.

12001001212111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12001001212111 - 2¹¹ = 12001001210063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001001212091 and 12001001212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001001212411) 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, 37634181 + ... + 37951726.

It is an arithmetic number, because the mean of its divisors is an integer number (1510206441840).

Almost surely, 2^{12001001212111} is an apocalyptic number.

12001001212111 is a deficient number, since it is larger than the sum of its proper divisors (80650322609).

12001001212111 is an equidigital number, since it uses as much as digits as its factorization.

12001001212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75586973.

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

Adding to 12001001212111 its reverse (11121210010021), we get a palindrome (23122211222132).

The spelling of 12001001212111 in words is "twelve trillion, one billion, one million, two hundred twelve thousand, one hundred eleven".