1321104201 has 4 divisors (see below), whose sum is σ = 1761472272. Its totient is φ = 880736132.

The previous prime is 1321104167. The next prime is 1321104209. The reversal of 1321104201 is 1024011231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321104201 - 2⁶ = 1321104137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321104209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220184031 + ... + 220184036.

It is an arithmetic number, because the mean of its divisors is an integer number (440368068).

Almost surely, 2^1321104201 is an apocalyptic number.

It is an amenable number.

1321104201 is a deficient number, since it is larger than the sum of its proper divisors (440368071).

1321104201 is an equidigital number, since it uses as much as digits as its factorization.

1321104201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440368070.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1321104201 is about 36346.9971386908. The cubic root of 1321104201 is about 1097.2671004323.

Adding to 1321104201 its reverse (1024011231), we get a palindrome (2345115432).

The spelling of 1321104201 in words is "one billion, three hundred twenty-one million, one hundred four thousand, two hundred one".