2012112101 has 4 divisors (see below), whose sum is σ = 2012375232. Its totient is φ = 2011848972.

The previous prime is 2012112079. The next prime is 2012112119. The reversal of 2012112101 is 1012112102.

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 2012112101 - 2¹⁴ = 2012095717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012112301) 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, 119741 + ... + 135506.

It is an arithmetic number, because the mean of its divisors is an integer number (503093808).

Almost surely, 2^2012112101 is an apocalyptic number.

It is an amenable number.

2012112101 is a deficient number, since it is larger than the sum of its proper divisors (263131).

2012112101 is an equidigital number, since it uses as much as digits as its factorization.

2012112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263130.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2012112101 is about 44856.5725507422. The cubic root of 2012112101 is about 1262.4593146514.

Adding to 2012112101 its reverse (1012112102), we get a palindrome (3024224203).

Subtracting from 2012112101 its reverse (1012112102), we obtain a palindrome (999999999).

The spelling of 2012112101 in words is "two billion, twelve million, one hundred twelve thousand, one hundred one".