2012311224 has 144 divisors (see below), whose sum is σ = 6916286520. Its totient is φ = 522668160.

The previous prime is 2012311159. The next prime is 2012311237. The reversal of 2012311224 is 4221132102.

It is a happy number.

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 = 2012311197 and 2012311206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12882 + ... + 64734.

Almost surely, 2^2012311224 is an apocalyptic number.

2012311224 is a gapful number since it is divisible by the number (24) 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 2012311224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3458143260).

2012311224 is an abundant number, since it is smaller than the sum of its proper divisors (4903975296).

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

2012311224 is a wasteful number, since it uses less digits than its factorization.

2012311224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51890 (or 51876 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2012311224 is about 44858.7920479364. The cubic root of 2012311224 is about 1262.5009585197.

Adding to 2012311224 its reverse (4221132102), we get a palindrome (6233443326).

It can be divided in two parts, 2012 and 311224, that added together give a triangular number (313236 = T₇₉₁).

The spelling of 2012311224 in words is "two billion, twelve million, three hundred eleven thousand, two hundred twenty-four".