12002122121211 has 6 divisors (see below), whose sum is σ = 17336398619540. Its totient is φ = 8001414747468.

The previous prime is 12002122121191. The next prime is 12002122121243. The reversal of 12002122121211 is 11212122120021.

12002122121211 is a `hidden beast` number, since 1 + 200 + 21 + 221 + 212 + 11 = 666.

It is not a de Polignac number, because 12002122121211 - 2⁹ = 12002122120699 is a prime.

It is a super-2 number, since 2×12002122121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002122121111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666784562281 + ... + 666784562298.

Almost surely, 2^{12002122121211} is an apocalyptic number.

12002122121211 is a deficient number, since it is larger than the sum of its proper divisors (5334276498329).

12002122121211 is a wasteful number, since it uses less digits than its factorization.

12002122121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333569124585 (or 1333569124582 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12002122121211 its reverse (11212122120021), we get a palindrome (23214244241232).

The spelling of 12002122121211 in words is "twelve trillion, two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".