2111212222011 has 6 divisors (see below), whose sum is σ = 3049528765140. Its totient is φ = 1407474814668.

The previous prime is 2111212222001. The next prime is 2111212222027. The reversal of 2111212222011 is 1102222121112.

It is not a de Polignac number, because 2111212222011 - 2⁶ = 2111212221947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111212222001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117289567881 + ... + 117289567898.

It is an arithmetic number, because the mean of its divisors is an integer number (508254794190).

Almost surely, 2^{2111212222011} is an apocalyptic number.

2111212222011 is a deficient number, since it is larger than the sum of its proper divisors (938316543129).

2111212222011 is a wasteful number, since it uses less digits than its factorization.

2111212222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234579135785 (or 234579135782 counting only the distinct ones).

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

Adding to 2111212222011 its reverse (1102222121112), we get a palindrome (3213434343123).

The spelling of 2111212222011 in words is "two trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, eleven".