2142110111 has 4 divisors (see below), whose sum is σ = 2163319224. Its totient is φ = 2120901000.

The previous prime is 2142110107. The next prime is 2142110167. The reversal of 2142110111 is 1110112412.

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 2142110111 - 2² = 2142110107 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 (2142110101) 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, 10604405 + ... + 10604606.

It is an arithmetic number, because the mean of its divisors is an integer number (540829806).

Almost surely, 2^2142110111 is an apocalyptic number.

2142110111 is a deficient number, since it is larger than the sum of its proper divisors (21209113).

2142110111 is a wasteful number, since it uses less digits than its factorization.

2142110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21209112.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 2142110111 is about 46282.9354190073. The cubic root of 2142110111 is about 1289.0821568306.

Adding to 2142110111 its reverse (1110112412), we get a palindrome (3252222523).

The spelling of 2142110111 in words is "two billion, one hundred forty-two million, one hundred ten thousand, one hundred eleven".