2100312111 has 4 divisors (see below), whose sum is σ = 2800416152. Its totient is φ = 1400208072.

The previous prime is 2100312029. The next prime is 2100312199. The reversal of 2100312111 is 1112130012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2100312111 - 2¹⁴ = 2100295727 is a prime.

It is a super-2 number, since 2×2100312111² = 8822621927226552642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100312911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350052016 + ... + 350052021.

It is an arithmetic number, because the mean of its divisors is an integer number (700104038).

Almost surely, 2^2100312111 is an apocalyptic number.

2100312111 is a deficient number, since it is larger than the sum of its proper divisors (700104041).

2100312111 is an equidigital number, since it uses as much as digits as its factorization.

2100312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700104040.

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

The square root of 2100312111 is about 45829.1622332331. The cubic root of 2100312111 is about 1280.6426035660.

Adding to 2100312111 its reverse (1112130012), we get a palindrome (3212442123).

The spelling of 2100312111 in words is "two billion, one hundred million, three hundred twelve thousand, one hundred eleven".