12211201012111 has 4 divisors (see below), whose sum is σ = 12300333866352. Its totient is φ = 12122068157872.

The previous prime is 12211201012091. The next prime is 12211201012273. The reversal of 12211201012111 is 11121010211221.

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 12211201012111 - 2¹⁵ = 12211200979343 is a prime.

It is a super-2 number, since 2×12211201012111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211201018111) 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, 44566426915 + ... + 44566427188.

It is an arithmetic number, because the mean of its divisors is an integer number (3075083466588).

Almost surely, 2^{12211201012111} is an apocalyptic number.

12211201012111 is a deficient number, since it is larger than the sum of its proper divisors (89132854241).

12211201012111 is an equidigital number, since it uses as much as digits as its factorization.

12211201012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89132854240.

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

Adding to 12211201012111 its reverse (11121010211221), we get a palindrome (23332211223332).

The spelling of 12211201012111 in words is "twelve trillion, two hundred eleven billion, two hundred one million, twelve thousand, one hundred eleven".