2012120213 has 4 divisors (see below), whose sum is σ = 2012211948. Its totient is φ = 2012028480.

The previous prime is 2012120189. The next prime is 2012120219. The reversal of 2012120213 is 3120212102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 336282244 + 1675837969 = 18338^2 + 40937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012120213 - 2⁸ = 2012119957 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 (2012120219) 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, 8573 + ... + 64013.

It is an arithmetic number, because the mean of its divisors is an integer number (503052987).

Almost surely, 2^2012120213 is an apocalyptic number.

It is an amenable number.

2012120213 is a deficient number, since it is larger than the sum of its proper divisors (91735).

2012120213 is an equidigital number, since it uses as much as digits as its factorization.

2012120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91734.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2012120213 is about 44856.6629721829. The cubic root of 2012120213 is about 1262.4610112196.

Adding to 2012120213 its reverse (3120212102), we get a palindrome (5132332315).

The spelling of 2012120213 in words is "two billion, twelve million, one hundred twenty thousand, two hundred thirteen".