2021313221131 has 2 divisors, whose sum is σ = 2021313221132. Its totient is φ = 2021313221130.

The previous prime is 2021313221107. The next prime is 2021313221141. The reversal of 2021313221131 is 1311223131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021313221131 - 2¹¹ = 2021313219083 is a prime.

It is a super-2 number, since 2×2021313221131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021313221141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010656610565 + 1010656610566.

It is an arithmetic number, because the mean of its divisors is an integer number (1010656610566).

Almost surely, 2^{2021313221131} is an apocalyptic number.

2021313221131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021313221131 is an equidigital number, since it uses as much as digits as its factorization.

2021313221131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2021313221131 its reverse (1311223131202), we get a palindrome (3332536352333).

The spelling of 2021313221131 in words is "two trillion, twenty-one billion, three hundred thirteen million, two hundred twenty-one thousand, one hundred thirty-one".