2212211211211 has 4 divisors (see below), whose sum is σ = 2212237163592. Its totient is φ = 2212185258832.

The previous prime is 2212211211181. The next prime is 2212211211229. The reversal of 2212211211211 is 1121121122122.

It is a happy number.

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-2212211211211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212211211311) 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, 12847906 + ... + 13018951.

It is an arithmetic number, because the mean of its divisors is an integer number (553059290898).

Almost surely, 2^{2212211211211} is an apocalyptic number.

2212211211211 is a deficient number, since it is larger than the sum of its proper divisors (25952381).

2212211211211 is an equidigital number, since it uses as much as digits as its factorization.

2212211211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25952380.

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

Adding to 2212211211211 its reverse (1121121122122), we get a palindrome (3333332333333).

The spelling of 2212211211211 in words is "two trillion, two hundred twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred eleven".