2021122231331 has 12 divisors (see below), whose sum is σ = 2338018896432. Its totient is φ = 1711518268656.

The previous prime is 2021122231309. The next prime is 2021122231343. The reversal of 2021122231331 is 1331322211202.

It is a de Polignac number, because none of the positive numbers 2^k-2021122231331 is a prime.

It is a super-2 number, since 2×2021122231331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021122231297 and 2021122231306.

It is not an unprimeable number, because it can be changed into a prime (2021122231361) 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 11 ways as a sum of consecutive naturals, for example, 20907776 + ... + 21004221.

It is an arithmetic number, because the mean of its divisors is an integer number (194834908036).

Almost surely, 2^{2021122231331} is an apocalyptic number.

2021122231331 is a deficient number, since it is larger than the sum of its proper divisors (316896665101).

2021122231331 is an frugal number, since it uses more digits than its factorization.

2021122231331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41912170 (or 41912087 counting only the distinct ones).

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

Adding to 2021122231331 its reverse (1331322211202), we get a palindrome (3352444442533).

The spelling of 2021122231331 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, three hundred thirty-one".