2012120101 has 4 divisors (see below), whose sum is σ = 2012458572. Its totient is φ = 2011781632.

The previous prime is 2012120057. The next prime is 2012120111. The reversal of 2012120101 is 1010212102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 612612001 + 1399508100 = 24751^2 + 37410^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012120101 - 2⁷ = 2012119973 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 (2012120111) 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, 160156 + ... + 172261.

It is an arithmetic number, because the mean of its divisors is an integer number (503114643).

Almost surely, 2^2012120101 is an apocalyptic number.

It is an amenable number.

2012120101 is a deficient number, since it is larger than the sum of its proper divisors (338471).

2012120101 is an equidigital number, since it uses as much as digits as its factorization.

2012120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338470.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2012120101 is about 44856.6617237618. The cubic root of 2012120101 is about 1262.4609877956.

Adding to 2012120101 its reverse (1010212102), we get a palindrome (3022332203).

The spelling of 2012120101 in words is "two billion, twelve million, one hundred twenty thousand, one hundred one".