1222222112011 has 4 divisors (see below), whose sum is σ = 1222628034024. Its totient is φ = 1221816190000.

The previous prime is 1222222111997. The next prime is 1222222112029. The reversal of 1222222112011 is 1102112222221.

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 1222222112011 - 2¹⁹ = 1222221587723 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 1222222112011.

It is not an unprimeable number, because it can be changed into a prime (1222222112071) 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, 202956490 + ... + 202962511.

It is an arithmetic number, because the mean of its divisors is an integer number (305657008506).

Almost surely, 2^{1222222112011} is an apocalyptic number.

1222222112011 is a deficient number, since it is larger than the sum of its proper divisors (405922013).

1222222112011 is an equidigital number, since it uses as much as digits as its factorization.

1222222112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405922012.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1222222112011 its reverse (1102112222221), we get a palindrome (2324334334232).

The spelling of 1222222112011 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, eleven".