12001110001211 has 4 divisors (see below), whose sum is σ = 12522897392592. Its totient is φ = 11479322609832.

The previous prime is 12001110001169. The next prime is 12001110001241. The reversal of 12001110001211 is 11210001110021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12001110001211 - 2¹⁸ = 12001109739067 is a prime.

It is a super-2 number, since 2×12001110001211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001110001192 and 12001110001201.

It is not an unprimeable number, because it can be changed into a prime (12001110001241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260893695656 + ... + 260893695701.

It is an arithmetic number, because the mean of its divisors is an integer number (3130724348148).

Almost surely, 2^{12001110001211} is an apocalyptic number.

12001110001211 is a deficient number, since it is larger than the sum of its proper divisors (521787391381).

12001110001211 is an equidigital number, since it uses as much as digits as its factorization.

12001110001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521787391380.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12001110001211 its reverse (11210001110021), we get a palindrome (23211111111232).

The spelling of 12001110001211 in words is "twelve trillion, one billion, one hundred ten million, one thousand, two hundred eleven".