1222111202111 has 16 divisors (see below), whose sum is σ = 1284270349824. Its totient is φ = 1160727669024.

The previous prime is 1222111202099. The next prime is 1222111202113. The reversal of 1222111202111 is 1112021112221.

It is a cyclic number.

It is not a de Polignac number, because 1222111202111 - 2³⁰ = 1221037460287 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 1222111202111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222111202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2010980 + ... + 2547206.

It is an arithmetic number, because the mean of its divisors is an integer number (80266896864).

Almost surely, 2^{1222111202111} is an apocalyptic number.

1222111202111 is a deficient number, since it is larger than the sum of its proper divisors (62159147713).

1222111202111 is a wasteful number, since it uses less digits than its factorization.

1222111202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536950.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1222111202111 its reverse (1112021112221), we get a palindrome (2334132314332).

The spelling of 1222111202111 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred two thousand, one hundred eleven".