2012021120 has 64 divisors (see below), whose sum is σ = 4912401600. Its totient is φ = 787673088.

The previous prime is 2012021069. The next prime is 2012021147. The reversal of 2012021120 is 211202102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365 + ... + 63524.

It is an arithmetic number, because the mean of its divisors is an integer number (76756275).

Almost surely, 2^2012021120 is an apocalyptic number.

2012021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2456200800).

2012021120 is an abundant number, since it is smaller than the sum of its proper divisors (2900380480).

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

2012021120 is an equidigital number, since it uses as much as digits as its factorization.

2012021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66955 (or 66943 counting only the distinct ones).

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

The square root of 2012021120 is about 44855.5584069578. The cubic root of 2012021120 is about 1262.4402862977.

Adding to 2012021120 its reverse (211202102), we get a palindrome (2223223222).

The spelling of 2012021120 in words is "two billion, twelve million, twenty-one thousand, one hundred twenty".