2012445121 has 2 divisors, whose sum is σ = 2012445122. Its totient is φ = 2012445120.

The previous prime is 2012445109. The next prime is 2012445143. The reversal of 2012445121 is 1215442102.

It is an a-pointer prime, because the next prime (2012445143) can be obtained adding 2012445121 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060414096 + 952031025 = 32564^2 + 30855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012445121 - 2⁵ = 2012445089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012445092 and 2012445101.

It is not a weakly prime, because it can be changed into another prime (2012445181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006222560 + 1006222561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006222561).

Almost surely, 2^2012445121 is an apocalyptic number.

It is an amenable number.

2012445121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012445121 is an equidigital number, since it uses as much as digits as its factorization.

2012445121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2012445121 is about 44860.2844507255. The cubic root of 2012445121 is about 1262.5289597121.

Adding to 2012445121 its reverse (1215442102), we get a palindrome (3227887223).

The spelling of 2012445121 in words is "two billion, twelve million, four hundred forty-five thousand, one hundred twenty-one".