12002011211 has 4 divisors (see below), whose sum is σ = 12002232000. Its totient is φ = 12001790424.

The previous prime is 12002011199. The next prime is 12002011223. The reversal of 12002011211 is 11211020021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11211020021 = 26723 ⋅419527.

It is an interprime number because it is at equal distance from previous prime (12002011199) and next prime (12002011223).

It is a cyclic number.

It is not a de Polignac number, because 12002011211 - 2²² = 11997816907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002011192 and 12002011201.

It is not an unprimeable number, because it can be changed into a prime (12002011711) 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, 34805 + ... + 158793.

It is an arithmetic number, because the mean of its divisors is an integer number (3000558000).

Almost surely, 2^12002011211 is an apocalyptic number.

12002011211 is a deficient number, since it is larger than the sum of its proper divisors (220789).

12002011211 is an equidigital number, since it uses as much as digits as its factorization.

12002011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12002011211 its reverse (11211020021), we get a palindrome (23213031232).

The spelling of 12002011211 in words is "twelve billion, two million, eleven thousand, two hundred eleven".