2102122222111 has 4 divisors (see below), whose sum is σ = 2131729577424. Its totient is φ = 2072514866800.

The previous prime is 2102122222021. The next prime is 2102122222141. The reversal of 2102122222111 is 1112222212012.

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 2102122222111 - 2²¹ = 2102120124959 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 (2102122222141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14803677550 + ... + 14803677691.

It is an arithmetic number, because the mean of its divisors is an integer number (532932394356).

Almost surely, 2^{2102122222111} is an apocalyptic number.

2102122222111 is a deficient number, since it is larger than the sum of its proper divisors (29607355313).

2102122222111 is an equidigital number, since it uses as much as digits as its factorization.

2102122222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29607355312.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2102122222111 its reverse (1112222212012), we get a palindrome (3214344434123).

The spelling of 2102122222111 in words is "two trillion, one hundred two billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".