1012231021331 has 2 divisors, whose sum is σ = 1012231021332. Its totient is φ = 1012231021330.

The previous prime is 1012231021289. The next prime is 1012231021343. The reversal of 1012231021331 is 1331201322101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012231021331 is a prime.

It is a super-2 number, since 2×1012231021331² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1012231020331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506115510665 + 506115510666.

It is an arithmetic number, because the mean of its divisors is an integer number (506115510666).

Almost surely, 2^{1012231021331} is an apocalyptic number.

1012231021331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012231021331 is an equidigital number, since it uses as much as digits as its factorization.

1012231021331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1012231021331 its reverse (1331201322101), we get a palindrome (2343432343432).

The spelling of 1012231021331 in words is "one trillion, twelve billion, two hundred thirty-one million, twenty-one thousand, three hundred thirty-one".