12011221210211 has 8 divisors (see below), whose sum is σ = 12237942277584. Its totient is φ = 11784503633760.

The previous prime is 12011221210181. The next prime is 12011221210229. The reversal of 12011221210211 is 11201212211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011221210211 - 2¹⁰ = 12011221209187 is a prime.

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 12011221210211.

It is not an unprimeable number, because it can be changed into a prime (12011221210291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6685616 + ... + 8289746.

It is an arithmetic number, because the mean of its divisors is an integer number (1529742784698).

Almost surely, 2^{12011221210211} is an apocalyptic number.

12011221210211 is a deficient number, since it is larger than the sum of its proper divisors (226721067373).

12011221210211 is a wasteful number, since it uses less digits than its factorization.

12011221210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745461.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12011221210211 its reverse (11201212211021), we get a palindrome (23212433421232).

The spelling of 12011221210211 in words is "twelve trillion, eleven billion, two hundred twenty-one million, two hundred ten thousand, two hundred eleven".