2122110212111 has 4 divisors (see below), whose sum is σ = 2147677805112. Its totient is φ = 2096542619112.

The previous prime is 2122110212107. The next prime is 2122110212113. The reversal of 2122110212111 is 1112120112212.

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 2122110212111 - 2² = 2122110212107 is a prime.

It is a super-2 number, since 2×2122110212111² (a number of 25 digits) contains 22 as substring.

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 2122110212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122110212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12783796376 + ... + 12783796541.

It is an arithmetic number, because the mean of its divisors is an integer number (536919451278).

Almost surely, 2^{2122110212111} is an apocalyptic number.

2122110212111 is a deficient number, since it is larger than the sum of its proper divisors (25567593001).

2122110212111 is an equidigital number, since it uses as much as digits as its factorization.

2122110212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25567593000.

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

Adding to 2122110212111 its reverse (1112120112212), we get a palindrome (3234230324323).

The spelling of 2122110212111 in words is "two trillion, one hundred twenty-two billion, one hundred ten million, two hundred twelve thousand, one hundred eleven".