2012203512 has 384 divisors, whose sum is σ = 6772896000. Its totient is φ = 547223040.

The previous prime is 2012203471. The next prime is 2012203513. The reversal of 2012203512 is 2153022102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012203513) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37966078 + ... + 37966130.

It is an arithmetic number, because the mean of its divisors is an integer number (17637750).

Almost surely, 2^2012203512 is an apocalyptic number.

2012203512 is a gapful number since it is divisible by the number (22) 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 2012203512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386448000).

2012203512 is an abundant number, since it is smaller than the sum of its proper divisors (4760692488).

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

2012203512 is a wasteful number, since it uses less digits than its factorization.

2012203512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2012203512 is about 44857.5914645448. The cubic root of 2012203512 is about 1262.4784323604.

Adding to 2012203512 its reverse (2153022102), we get a palindrome (4165225614).

The spelling of 2012203512 in words is "two billion, twelve million, two hundred three thousand, five hundred twelve".