2012122120 has 16 divisors (see below), whose sum is σ = 4527274860. Its totient is φ = 804848832.

The previous prime is 2012122117. The next prime is 2012122127. The reversal of 2012122120 is 212212102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1932305764 + 79816356 = 43958^2 + 8934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2012122120.

It is not an unprimeable number, because it can be changed into a prime (2012122127) 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, 25151487 + ... + 25151566.

Almost surely, 2^2012122120 is an apocalyptic number.

2012122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012122120 is an abundant number, since it is smaller than the sum of its proper divisors (2515152740).

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

2012122120 is a wasteful number, since it uses less digits than its factorization.

2012122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50303064 (or 50303060 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2012122120 is about 44856.6842287746. The cubic root of 2012122120 is about 1262.4614100547.

Adding to 2012122120 its reverse (212212102), we get a palindrome (2224334222).

The spelling of 2012122120 in words is "two billion, twelve million, one hundred twenty-two thousand, one hundred twenty".