12212011212211 has 4 divisors (see below), whose sum is σ = 12228447298032. Its totient is φ = 12195575126392.

The previous prime is 12212011212151. The next prime is 12212011212217. The reversal of 12212011212211 is 11221211021221.

It is a happy number.

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 12212011212211 - 2³⁷ = 12074572258739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212011212217) 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, 8218041796 + ... + 8218043281.

It is an arithmetic number, because the mean of its divisors is an integer number (3057111824508).

Almost surely, 2^{12212011212211} is an apocalyptic number.

12212011212211 is a deficient number, since it is larger than the sum of its proper divisors (16436085821).

12212011212211 is an equidigital number, since it uses as much as digits as its factorization.

12212011212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16436085820.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12212011212211 its reverse (11221211021221), we get a palindrome (23433222233432).

The spelling of 12212011212211 in words is "twelve trillion, two hundred twelve billion, eleven million, two hundred twelve thousand, two hundred eleven".