2012333220 has 60 divisors (see below), whose sum is σ = 6312768924. Its totient is φ = 536621760.

The previous prime is 2012333207. The next prime is 2012333249. The reversal of 2012333220 is 223332102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 702038016 + 1310295204 = 26496^2 + 36198^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2012333193 and 2012333202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 619471 + ... + 622710.

Almost surely, 2^2012333220 is an apocalyptic number.

2012333220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012333220 is an abundant number, since it is smaller than the sum of its proper divisors (4300435704).

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

2012333220 is a wasteful number, since it uses less digits than its factorization.

2012333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242202 (or 1242191 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 2012333220 is about 44859.0372165966. The cubic root of 2012333220 is about 1262.5055585155.

Adding to 2012333220 its reverse (223332102), we get a palindrome (2235665322).

The spelling of 2012333220 in words is "two billion, twelve million, three hundred thirty-three thousand, two hundred twenty".