2012331223512 has 80 divisors (see below), whose sum is σ = 5713601661240. Its totient is φ = 661588331904.

The previous prime is 2012331223501. The next prime is 2012331223517. The reversal of 2012331223512 is 2153221332102.

2012331223512 is a `hidden beast` number, since 2 + 0 + 1 + 23 + 3 + 122 + 3 + 512 = 666.

It is a super-2 number, since 2×2012331223512² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012331223517) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21222898 + ... + 21317505.

Almost surely, 2^{2012331223512} is an apocalyptic number.

It is an amenable number.

2012331223512 is an abundant number, since it is smaller than the sum of its proper divisors (3701270437728).

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

2012331223512 is a wasteful number, since it uses less digits than its factorization.

2012331223512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42540494 (or 42540481 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 2012331223512 its reverse (2153221332102), we get a palindrome (4165552555614).

The spelling of 2012331223512 in words is "two trillion, twelve billion, three hundred thirty-one million, two hundred twenty-three thousand, five hundred twelve".