2122210211111 has 4 divisors (see below), whose sum is σ = 2233905485400. Its totient is φ = 2010514936824.

The previous prime is 2122210211063. The next prime is 2122210211129. The reversal of 2122210211111 is 1111120122212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2122210211111 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 2122210211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122210211911) 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, 55847637116 + ... + 55847637153.

It is an arithmetic number, because the mean of its divisors is an integer number (558476371350).

Almost surely, 2^{2122210211111} is an apocalyptic number.

2122210211111 is a deficient number, since it is larger than the sum of its proper divisors (111695274289).

2122210211111 is a wasteful number, since it uses less digits than its factorization.

2122210211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111695274288.

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

Adding to 2122210211111 its reverse (1111120122212), we get a palindrome (3233330333323).

The spelling of 2122210211111 in words is "two trillion, one hundred twenty-two billion, two hundred ten million, two hundred eleven thousand, one hundred eleven".