1321432201 has 8 divisors (see below), whose sum is σ = 1325821824. Its totient is φ = 1317051120.

The previous prime is 1321432181. The next prime is 1321432247. The reversal of 1321432201 is 1022341231.

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 not a de Polignac number, because 1321432201 - 2⁵ = 1321432169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321432291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450000 + ... + 452926.

It is an arithmetic number, because the mean of its divisors is an integer number (165727728).

Almost surely, 2^1321432201 is an apocalyptic number.

It is an amenable number.

1321432201 is a deficient number, since it is larger than the sum of its proper divisors (4389623).

1321432201 is an equidigital number, since it uses as much as digits as its factorization.

1321432201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1321432201 is about 36351.5089232896. The cubic root of 1321432201 is about 1097.3579017048.

Adding to 1321432201 its reverse (1022341231), we get a palindrome (2343773432).

The spelling of 1321432201 in words is "one billion, three hundred twenty-one million, four hundred thirty-two thousand, two hundred one".