2122011011111 has 4 divisors (see below), whose sum is σ = 2143021021224. Its totient is φ = 2101001001000.

The previous prime is 2122011011089. The next prime is 2122011011117. The reversal of 2122011011111 is 1111101102212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2122011011111 - 2⁶ = 2122011011047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122011011117) 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, 10505004905 + ... + 10505005106.

It is an arithmetic number, because the mean of its divisors is an integer number (535755255306).

Almost surely, 2^{2122011011111} is an apocalyptic number.

2122011011111 is a deficient number, since it is larger than the sum of its proper divisors (21010010113).

2122011011111 is a wasteful number, since it uses less digits than its factorization.

2122011011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21010010112.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2122011011111 its reverse (1111101102212), we get a palindrome (3233112113323).

It can be divided in two parts, 212201101 and 1111, that added together give a palindrome (212202212).

The spelling of 2122011011111 in words is "two trillion, one hundred twenty-two billion, eleven million, eleven thousand, one hundred eleven".