2101111113 has 4 divisors (see below), whose sum is σ = 2801481488. Its totient is φ = 1400740740.

The previous prime is 2101111109. The next prime is 2101111121. The reversal of 2101111113 is 3111111012.

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 not a de Polignac number, because 2101111113 - 2² = 2101111109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350185183 + ... + 350185188.

It is an arithmetic number, because the mean of its divisors is an integer number (700370372).

Almost surely, 2^2101111113 is an apocalyptic number.

It is an amenable number.

2101111113 is a deficient number, since it is larger than the sum of its proper divisors (700370375).

2101111113 is an equidigital number, since it uses as much as digits as its factorization.

2101111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700370374.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 2101111113 is about 45837.8785831107. The cubic root of 2101111113 is about 1280.8049772548.

Adding to 2101111113 its reverse (3111111012), we get a palindrome (5212222125).

The spelling of 2101111113 in words is "two billion, one hundred one million, one hundred eleven thousand, one hundred thirteen".