1323220001 has 8 divisors (see below), whose sum is σ = 1330336224. Its totient is φ = 1316115520.

The previous prime is 1323219977. The next prime is 1323220009. The reversal of 1323220001 is 1000223231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323220001 is a prime.

It is a super-2 number, since 2×1323220001² = 3501822342092880002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1323220009) 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 7 ways as a sum of consecutive naturals, for example, 306806 + ... + 311088.

It is an arithmetic number, because the mean of its divisors is an integer number (166292028).

Almost surely, 2^1323220001 is an apocalyptic number.

It is an amenable number.

1323220001 is a deficient number, since it is larger than the sum of its proper divisors (7116223).

1323220001 is a wasteful number, since it uses less digits than its factorization.

1323220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5871.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1323220001 is about 36376.0910626747. The cubic root of 1323220001 is about 1097.8525600436.

Adding to 1323220001 its reverse (1000223231), we get a palindrome (2323443232).

It can be divided in two parts, 13232 and 20001, that added together give a palindrome (33233).

The spelling of 1323220001 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, one".