12021120220211 has 4 divisors (see below), whose sum is σ = 12033551576112. Its totient is φ = 12008688864312.

The previous prime is 12021120220199. The next prime is 12021120220259. The reversal of 12021120220211 is 11202202112021.

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 12021120220211 - 2¹⁰ = 12021120219187 is a prime.

It is a super-2 number, since 2×12021120220211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021120220211.

It is not an unprimeable number, because it can be changed into a prime (12021120220411) 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, 6215676500 + ... + 6215678433.

It is an arithmetic number, because the mean of its divisors is an integer number (3008387894028).

Almost surely, 2^{12021120220211} is an apocalyptic number.

12021120220211 is a deficient number, since it is larger than the sum of its proper divisors (12431355901).

12021120220211 is an equidigital number, since it uses as much as digits as its factorization.

12021120220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12431355900.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021120220211 its reverse (11202202112021), we get a palindrome (23223322332232).

The spelling of 12021120220211 in words is "twelve trillion, twenty-one billion, one hundred twenty million, two hundred twenty thousand, two hundred eleven".