2110111121 has 4 divisors (see below), whose sum is σ = 2123056752. Its totient is φ = 2097165492.

The previous prime is 2110111117. The next prime is 2110111123. The reversal of 2110111121 is 1211110112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2110111121 - 2² = 2110111117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2110111123) 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, 6472571 + ... + 6472896.

It is an arithmetic number, because the mean of its divisors is an integer number (530764188).

Almost surely, 2^2110111121 is an apocalyptic number.

It is an amenable number.

2110111121 is a deficient number, since it is larger than the sum of its proper divisors (12945631).

2110111121 is a wasteful number, since it uses less digits than its factorization.

2110111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12945630.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 2110111121 is about 45935.9458485400. The cubic root of 2110111121 is about 1282.6311277477.

Adding to 2110111121 its reverse (1211110112), we get a palindrome (3321221233).

The spelling of 2110111121 in words is "two billion, one hundred ten million, one hundred eleven thousand, one hundred twenty-one".