2012110121 has 4 divisors (see below), whose sum is σ = 2299554432. Its totient is φ = 1724665812.

The previous prime is 2012110117. The next prime is 2012110147. The reversal of 2012110121 is 1210112102.

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 2012110121 - 2² = 2012110117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2012110721) 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, 143722145 + ... + 143722158.

It is an arithmetic number, because the mean of its divisors is an integer number (574888608).

Almost surely, 2^2012110121 is an apocalyptic number.

It is an amenable number.

2012110121 is a deficient number, since it is larger than the sum of its proper divisors (287444311).

2012110121 is an equidigital number, since it uses as much as digits as its factorization.

2012110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287444310.

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

The square root of 2012110121 is about 44856.5504803925. The cubic root of 2012110121 is about 1262.4589005475.

Adding to 2012110121 its reverse (1210112102), we get a palindrome (3222222223).

The spelling of 2012110121 in words is "two billion, twelve million, one hundred ten thousand, one hundred twenty-one".