1326041221 has 16 divisors (see below), whose sum is σ = 1378321920. Its totient is φ = 1274972800.

The previous prime is 1326041209. The next prime is 1326041231. The reversal of 1326041221 is 1221406231.

It is a cyclic number.

It is not a de Polignac number, because 1326041221 - 2¹⁷ = 1325910149 is a prime.

It is a super-3 number, since 3×1326041221³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1326041192 and 1326041201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326041231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649320 + ... + 651358.

It is an arithmetic number, because the mean of its divisors is an integer number (86145120).

Almost surely, 2^1326041221 is an apocalyptic number.

It is an amenable number.

1326041221 is a deficient number, since it is larger than the sum of its proper divisors (52280699).

1326041221 is a wasteful number, since it uses less digits than its factorization.

1326041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1326041221 is about 36414.8489081034. The cubic root of 1326041221 is about 1098.6322451992.

Adding to 1326041221 its reverse (1221406231), we get a palindrome (2547447452).

The spelling of 1326041221 in words is "one billion, three hundred twenty-six million, forty-one thousand, two hundred twenty-one".