12000012021211 has 4 divisors (see below), whose sum is σ = 12179116678312. Its totient is φ = 11820907364112.

The previous prime is 12000012021191. The next prime is 12000012021223. The reversal of 12000012021211 is 11212021000021.

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 12000012021211 - 2¹³ = 12000012013019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000012021191 and 12000012021200.

It is not an unprimeable number, because it can be changed into a prime (12000012022211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89552328450 + ... + 89552328583.

It is an arithmetic number, because the mean of its divisors is an integer number (3044779169578).

Almost surely, 2^{12000012021211} is an apocalyptic number.

12000012021211 is a deficient number, since it is larger than the sum of its proper divisors (179104657101).

12000012021211 is an equidigital number, since it uses as much as digits as its factorization.

12000012021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179104657100.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12000012021211 its reverse (11212021000021), we get a palindrome (23212033021232).

The spelling of 12000012021211 in words is "twelve trillion, twelve million, twenty-one thousand, two hundred eleven".