2011212222111 has 24 divisors (see below), whose sum is σ = 3036196640256. Its totient is φ = 1280479551120.

The previous prime is 2011212222077. The next prime is 2011212222113. The reversal of 2011212222111 is 1112222121102.

It is not a de Polignac number, because 2011212222111 - 2⁷ = 2011212221983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011212222113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7568275 + ... + 7829508.

It is an arithmetic number, because the mean of its divisors is an integer number (126508193344).

Almost surely, 2^{2011212222111} is an apocalyptic number.

2011212222111 is a deficient number, since it is larger than the sum of its proper divisors (1024984418145).

2011212222111 is a wasteful number, since it uses less digits than its factorization.

2011212222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15398443 (or 15398440 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2011212222111 its reverse (1112222121102), we get a palindrome (3123434343213).

The spelling of 2011212222111 in words is "two trillion, eleven billion, two hundred twelve million, two hundred twenty-two thousand, one hundred eleven".