2021321331212 has 6 divisors (see below), whose sum is σ = 3537312329628. Its totient is φ = 1010660665604.

The previous prime is 2021321331181. The next prime is 2021321331229. The reversal of 2021321331212 is 2121331231202.

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 as a sum of consecutive naturals, namely, 252665166398 + ... + 252665166405.

It is an arithmetic number, because the mean of its divisors is an integer number (589552054938).

Almost surely, 2^{2021321331212} is an apocalyptic number.

It is an amenable number.

2021321331212 is a deficient number, since it is larger than the sum of its proper divisors (1515990998416).

2021321331212 is a wasteful number, since it uses less digits than its factorization.

2021321331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505330332807 (or 505330332805 counting only the distinct ones).

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

Adding to 2021321331212 its reverse (2121331231202), we get a palindrome (4142652562414).

The spelling of 2021321331212 in words is "two trillion, twenty-one billion, three hundred twenty-one million, three hundred thirty-one thousand, two hundred twelve".