2121313332312 has 128 divisors (see below), whose sum is σ = 5981596416000. Its totient is φ = 696444376320.

The previous prime is 2121313332287. The next prime is 2121313332319. The reversal of 2121313332312 is 2132333131212.

2121313332312 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 13 + 332 + 312 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121313332319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11243637 + ... + 11430747.

It is an arithmetic number, because the mean of its divisors is an integer number (46731222000).

Almost surely, 2^{2121313332312} 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 2121313332312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2990798208000).

2121313332312 is an abundant number, since it is smaller than the sum of its proper divisors (3860283083688).

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

2121313332312 is a wasteful number, since it uses less digits than its factorization.

2121313332312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187918 (or 187908 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 2121313332312 its reverse (2132333131212), we get a palindrome (4253646463524).

The spelling of 2121313332312 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, three hundred thirty-two thousand, three hundred twelve".