1321024111133 has 4 divisors (see below), whose sum is σ = 1328660088828. Its totient is φ = 1313388133440.

The previous prime is 1321024111081. The next prime is 1321024111157. The reversal of 1321024111133 is 3311114201231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1255773495769 + 65250615364 = 1120613^2 + 255442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321024111133 - 2¹² = 1321024107037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321024111099 and 1321024111108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321024111933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817988588 + ... + 3817988933.

It is an arithmetic number, because the mean of its divisors is an integer number (332165022207).

Almost surely, 2^{1321024111133} is an apocalyptic number.

It is an amenable number.

1321024111133 is a deficient number, since it is larger than the sum of its proper divisors (7635977695).

1321024111133 is an equidigital number, since it uses as much as digits as its factorization.

1321024111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7635977694.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1321024111133 its reverse (3311114201231), we get a palindrome (4632138312364).

The spelling of 1321024111133 in words is "one trillion, three hundred twenty-one billion, twenty-four million, one hundred eleven thousand, one hundred thirty-three".