1321324101 has 12 divisors (see below), whose sum is σ = 1915375020. Its totient is φ = 877746240.

The previous prime is 1321324007. The next prime is 1321324153. The reversal of 1321324101 is 1014231231.

It can be written as a sum of positive squares in 2 ways, for example, as 442260900 + 879063201 = 21030^2 + 29649^2 .

It is not a de Polignac number, because 1321324101 - 2¹⁰ = 1321323077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321324801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258706 + ... + 263763.

It is an arithmetic number, because the mean of its divisors is an integer number (159614585).

Almost surely, 2^1321324101 is an apocalyptic number.

It is an amenable number.

1321324101 is a deficient number, since it is larger than the sum of its proper divisors (594050919).

1321324101 is a wasteful number, since it uses less digits than its factorization.

1321324101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522756 (or 522753 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1321324101 is about 36350.0220220016. The cubic root of 1321324101 is about 1097.3279777017.

Adding to 1321324101 its reverse (1014231231), we get a palindrome (2335555332).

The spelling of 1321324101 in words is "one billion, three hundred twenty-one million, three hundred twenty-four thousand, one hundred one".