1300121021993 has 2 divisors, whose sum is σ = 1300121021994. Its totient is φ = 1300121021992.

The previous prime is 1300121021987. The next prime is 1300121022041. The reversal of 1300121021993 is 3991201210031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1277720511769 + 22400510224 = 1130363^2 + 149668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300121021993 - 2⁴ = 1300121021977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1300121021923) 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 as a sum of consecutive naturals, namely, 650060510996 + 650060510997.

It is an arithmetic number, because the mean of its divisors is an integer number (650060510997).

Almost surely, 2^{1300121021993} is an apocalyptic number.

It is an amenable number.

1300121021993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300121021993 is an equidigital number, since it uses as much as digits as its factorization.

1300121021993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 1300121021993 in words is "one trillion, three hundred billion, one hundred twenty-one million, twenty-one thousand, nine hundred ninety-three".