2021321331234 has 36 divisors (see below), whose sum is σ = 4488952724178. Its totient is φ = 657340260480.

The previous prime is 2021321331229. The next prime is 2021321331247. The reversal of 2021321331234 is 4321331231202.

2021321331234 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 321 + 331 + 2 + 3 + 4 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 291972719025 + 1729348612209 = 540345^2 + 1315047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2021321331198 and 2021321331207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33371179 + ... + 33431694.

Almost surely, 2^{2021321331234} is an apocalyptic number.

2021321331234 is an abundant number, since it is smaller than the sum of its proper divisors (2467631392944).

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

2021321331234 is a wasteful number, since it uses less digits than its factorization.

2021321331234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66802963 (or 66802919 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 2021321331234 its reverse (4321331231202), we get a palindrome (6342652562436).

The spelling of 2021321331234 in words is "two trillion, twenty-one billion, three hundred twenty-one million, three hundred thirty-one thousand, two hundred thirty-four".