2131321213332 has 120 divisors (see below), whose sum is σ = 5723644619616. Its totient is φ = 691074597312.

The previous prime is 2131321213283. The next prime is 2131321213337. The reversal of 2131321213332 is 2333121231312.

2131321213332 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 321 + 2 + 1 + 3 + 332 = 666.

It is a super-2 number, since 2×2131321213332² (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 nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2131321213296 and 2131321213305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131321213337) 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 39 ways as a sum of consecutive naturals, for example, 56600503 + ... + 56638145.

Almost surely, 2^{2131321213332} 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 2131321213332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861822309808).

2131321213332 is an abundant number, since it is smaller than the sum of its proper divisors (3592323406284).

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

2131321213332 is a wasteful number, since it uses less digits than its factorization.

2131321213332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42419 (or 42408 counting only the distinct ones).

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

Adding to 2131321213332 its reverse (2333121231312), we get a palindrome (4464442444644).

The spelling of 2131321213332 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-one million, two hundred thirteen thousand, three hundred thirty-two".