12001012012111 has 16 divisors (see below), whose sum is σ = 12375255247488. Its totient is φ = 11629400580000.

The previous prime is 12001012012063. The next prime is 12001012012127. The reversal of 12001012012111 is 11121021010021.

It is a happy number.

12001012012111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12001012012111 - 2¹³ = 12001012003919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001012012091 and 12001012012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001012012811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196956096 + ... + 197017018.

It is an arithmetic number, because the mean of its divisors is an integer number (773453452968).

Almost surely, 2^{12001012012111} is an apocalyptic number.

12001012012111 is a deficient number, since it is larger than the sum of its proper divisors (374243235377).

12001012012111 is a wasteful number, since it uses less digits than its factorization.

12001012012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82422.

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

Adding to 12001012012111 its reverse (11121021010021), we get a palindrome (23122033022132).

The spelling of 12001012012111 in words is "twelve trillion, one billion, twelve million, twelve thousand, one hundred eleven".