2012122331312 has 120 divisors (see below), whose sum is σ = 4197298498560. Its totient is φ = 934098048000.

The previous prime is 2012122331309. The next prime is 2012122331339. The reversal of 2012122331312 is 2131332212102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822280073 + ... + 822282519.

It is an arithmetic number, because the mean of its divisors is an integer number (34977487488).

Almost surely, 2^{2012122331312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012122331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2098649249280).

2012122331312 is an abundant number, since it is smaller than the sum of its proper divisors (2185176167248).

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

2012122331312 is a wasteful number, since it uses less digits than its factorization.

2012122331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819 (or 4796 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2012122331312 its reverse (2131332212102), we get a palindrome (4143454543414).

The spelling of 2012122331312 in words is "two trillion, twelve billion, one hundred twenty-two million, three hundred thirty-one thousand, three hundred twelve".