1012313011321 has 2 divisors, whose sum is σ = 1012313011322. Its totient is φ = 1012313011320.

The previous prime is 1012313011313. The next prime is 1012313011379. The reversal of 1012313011321 is 1231103132101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 920103008400 + 92210002921 = 959220^2 + 303661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012313011321 - 2³ = 1012313011313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012313011121) 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, 506156505660 + 506156505661.

It is an arithmetic number, because the mean of its divisors is an integer number (506156505661).

Almost surely, 2^{1012313011321} is an apocalyptic number.

It is an amenable number.

1012313011321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012313011321 is an equidigital number, since it uses as much as digits as its factorization.

1012313011321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1012313011321 its reverse (1231103132101), we get a palindrome (2243416143422).

The spelling of 1012313011321 in words is "one trillion, twelve billion, three hundred thirteen million, eleven thousand, three hundred twenty-one".