1321012102133 has 2 divisors, whose sum is σ = 1321012102134. Its totient is φ = 1321012102132.

The previous prime is 1321012102121. The next prime is 1321012102237. The reversal of 1321012102133 is 3312012101231.

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., 1111575901969 + 209436200164 = 1054313^2 + 457642^2 .

It is an emirp because it is prime and its reverse (3312012101231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321012102133 - 2¹⁸ = 1321011839989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321012102103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660506051066 + 660506051067.

It is an arithmetic number, because the mean of its divisors is an integer number (660506051067).

Almost surely, 2^{1321012102133} is an apocalyptic number.

It is an amenable number.

1321012102133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321012102133 is an equidigital number, since it uses as much as digits as its factorization.

1321012102133 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 1321012102133 its reverse (3312012101231), we get a palindrome (4633024203364).

The spelling of 1321012102133 in words is "one trillion, three hundred twenty-one billion, twelve million, one hundred two thousand, one hundred thirty-three".