2012122105 has 16 divisors (see below), whose sum is σ = 2792732544. Its totient is φ = 1363115520.

The previous prime is 2012122033. The next prime is 2012122117. The reversal of 2012122105 is 5012212102.

It is a happy number.

It is not a de Polignac number, because 2012122105 - 2⁷ = 2012121977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343416 + ... + 349225.

It is an arithmetic number, because the mean of its divisors is an integer number (174545784).

Almost surely, 2^2012122105 is an apocalyptic number.

It is an amenable number.

2012122105 is a deficient number, since it is larger than the sum of its proper divisors (780610439).

2012122105 is an equidigital number, since it uses as much as digits as its factorization.

2012122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692736.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2012122105 is about 44856.6840615755. The cubic root of 2012122105 is about 1262.4614069175.

Adding to 2012122105 its reverse (5012212102), we get a palindrome (7024334207).

The spelling of 2012122105 in words is "two billion, twelve million, one hundred twenty-two thousand, one hundred five".