1320133203121 has 2 divisors, whose sum is σ = 1320133203122. Its totient is φ = 1320133203120.

The previous prime is 1320133203107. The next prime is 1320133203149. The reversal of 1320133203121 is 1213023310231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168699372096 + 151433831025 = 1081064^2 + 389145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320133203121 - 2¹⁵ = 1320133170353 is a prime.

It is a super-2 number, since 2×1320133203121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320133203092 and 1320133203101.

It is not a weakly prime, because it can be changed into another prime (1320133203161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660066601560 + 660066601561.

It is an arithmetic number, because the mean of its divisors is an integer number (660066601561).

Almost surely, 2^{1320133203121} is an apocalyptic number.

It is an amenable number.

1320133203121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320133203121 is an equidigital number, since it uses as much as digits as its factorization.

1320133203121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1320133203121 its reverse (1213023310231), we get a palindrome (2533156513352).

The spelling of 1320133203121 in words is "one trillion, three hundred twenty billion, one hundred thirty-three million, two hundred three thousand, one hundred twenty-one".