1323121201 has 8 divisors (see below), whose sum is σ = 1369154880. Its totient is φ = 1277114832.

The previous prime is 1323121193. The next prime is 1323121213. The reversal of 1323121201 is 1021213231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323121201 - 2³ = 1323121193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323121231) 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, 167916 + ... + 175618.

It is an arithmetic number, because the mean of its divisors is an integer number (171144360).

Almost surely, 2^1323121201 is an apocalyptic number.

It is an amenable number.

1323121201 is a deficient number, since it is larger than the sum of its proper divisors (46033679).

1323121201 is an equidigital number, since it uses as much as digits as its factorization.

1323121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13655.

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

The square root of 1323121201 is about 36374.7330024565. The cubic root of 1323121201 is about 1097.8252351512.

Adding to 1323121201 its reverse (1021213231), we get a palindrome (2344334432).

The spelling of 1323121201 in words is "one billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred one".