2012102120 has 64 divisors (see below), whose sum is σ = 5340902400. Its totient is φ = 667607040.

The previous prime is 2012102117. The next prime is 2012102129. The reversal of 2012102120 is 212012102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2012102129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107225 + ... + 124584.

It is an arithmetic number, because the mean of its divisors is an integer number (83451600).

Almost surely, 2^2012102120 is an apocalyptic number.

2012102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012102120 is an abundant number, since it is smaller than the sum of its proper divisors (3328800280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2012102120 is a wasteful number, since it uses less digits than its factorization.

2012102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231858 (or 231854 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2012102120 is about 44856.4612960051. The cubic root of 2012102120 is about 1262.4572271886.

Adding to 2012102120 its reverse (212012102), we get a palindrome (2224114222).

The spelling of 2012102120 in words is "two billion, twelve million, one hundred two thousand, one hundred twenty".