12211231102211 has 4 divisors (see below), whose sum is σ = 12632308036800. Its totient is φ = 11790154167624.

The previous prime is 12211231102199. The next prime is 12211231102247. The reversal of 12211231102211 is 11220113211221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211231102211 is a prime.

It is a super-2 number, since 2×12211231102211² (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 (12211231102261) 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, 210538467251 + ... + 210538467308.

It is an arithmetic number, because the mean of its divisors is an integer number (3158077009200).

Almost surely, 2^{12211231102211} is an apocalyptic number.

12211231102211 is a deficient number, since it is larger than the sum of its proper divisors (421076934589).

12211231102211 is an equidigital number, since it uses as much as digits as its factorization.

12211231102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421076934588.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 12211231102211 its reverse (11220113211221), we get a palindrome (23431344313432).

The spelling of 12211231102211 in words is "twelve trillion, two hundred eleven billion, two hundred thirty-one million, one hundred two thousand, two hundred eleven".