1320312021133 has 4 divisors (see below), whose sum is σ = 1508928024160. Its totient is φ = 1131696018108.

The previous prime is 1320312021131. The next prime is 1320312021173. The reversal of 1320312021133 is 3311202130231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320312021133 - 2¹ = 1320312021131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320312021131) 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 in 3 ways as a sum of consecutive naturals, for example, 94308001503 + ... + 94308001516.

It is an arithmetic number, because the mean of its divisors is an integer number (377232006040).

Almost surely, 2^{1320312021133} is an apocalyptic number.

It is an amenable number.

1320312021133 is a deficient number, since it is larger than the sum of its proper divisors (188616003027).

1320312021133 is an equidigital number, since it uses as much as digits as its factorization.

1320312021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188616003026.

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

Adding to 1320312021133 its reverse (3311202130231), we get a palindrome (4631514151364).

The spelling of 1320312021133 in words is "one trillion, three hundred twenty billion, three hundred twelve million, twenty-one thousand, one hundred thirty-three".