1222001222011 has 4 divisors (see below), whose sum is σ = 1222003441800. Its totient is φ = 1221999002224.

The previous prime is 1222001221939. The next prime is 1222001222033. The reversal of 1222001222011 is 1102221002221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1222001222011 - 2⁹ = 1222001221499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222001222081) 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, 405975 + ... + 1615183.

It is an arithmetic number, because the mean of its divisors is an integer number (305500860450).

Almost surely, 2^{1222001222011} is an apocalyptic number.

1222001222011 is a deficient number, since it is larger than the sum of its proper divisors (2219789).

1222001222011 is a wasteful number, since it uses less digits than its factorization.

1222001222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219788.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222001222011 its reverse (1102221002221), we get a palindrome (2324222224232).

The spelling of 1222001222011 in words is "one trillion, two hundred twenty-two billion, one million, two hundred twenty-two thousand, eleven".