2112222111211 has 16 divisors (see below), whose sum is σ = 2243690601408. Its totient is φ = 1981563136000.

The previous prime is 2112222111191. The next prime is 2112222111283. The reversal of 2112222111211 is 1121112222112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2112222111211 - 2¹¹ = 2112222109163 is a prime.

It is a super-2 number, since 2×2112222111211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112222112211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9246906 + ... + 9472576.

It is an arithmetic number, because the mean of its divisors is an integer number (140230662588).

Almost surely, 2^{2112222111211} is an apocalyptic number.

2112222111211 is a deficient number, since it is larger than the sum of its proper divisors (131468490197).

2112222111211 is a wasteful number, since it uses less digits than its factorization.

2112222111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227462.

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

Adding to 2112222111211 its reverse (1121112222112), we get a palindrome (3233334333323).

The spelling of 2112222111211 in words is "two trillion, one hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, two hundred eleven".