1326000121 has 4 divisors (see below), whose sum is σ = 1335679092. Its totient is φ = 1316321152.

The previous prime is 1326000113. The next prime is 1326000133. The reversal of 1326000121 is 1210006231.

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 934158096 + 391842025 = 30564^2 + 19795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326000121 - 2³ = 1326000113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1326000095 and 1326000104.

It is not an unprimeable number, because it can be changed into a prime (1326000521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4839280 + ... + 4839553.

It is an arithmetic number, because the mean of its divisors is an integer number (333919773).

Almost surely, 2^1326000121 is an apocalyptic number.

It is an amenable number.

1326000121 is a deficient number, since it is larger than the sum of its proper divisors (9678971).

1326000121 is an equidigital number, since it uses as much as digits as its factorization.

1326000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9678970.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1326000121 is about 36414.2845735022. The cubic root of 1326000121 is about 1098.6208945587.

Adding to 1326000121 its reverse (1210006231), we get a palindrome (2536006352).

The spelling of 1326000121 in words is "one billion, three hundred twenty-six million, one hundred twenty-one", and thus it is an aban number.