1103201321 has 4 divisors (see below), whose sum is σ = 1103429892. Its totient is φ = 1102972752.

The previous prime is 1103201299. The next prime is 1103201327. The reversal of 1103201321 is 1231023011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231023011 = 463 ⋅2658797.

It can be written as a sum of positive squares in 2 ways, for example, as 239135296 + 864066025 = 15464^2 + 29395^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103201321 - 2⁶ = 1103201257 is a prime.

It is a super-2 number, since 2×1103201321² = 2434106309312290082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103201296 and 1103201305.

It is not an unprimeable number, because it can be changed into a prime (1103201327) 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, 106886 + ... + 116751.

It is an arithmetic number, because the mean of its divisors is an integer number (275857473).

Almost surely, 2^1103201321 is an apocalyptic number.

It is an amenable number.

1103201321 is a deficient number, since it is larger than the sum of its proper divisors (228571).

1103201321 is an equidigital number, since it uses as much as digits as its factorization.

1103201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228570.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1103201321 is about 33214.4745705844. The cubic root of 1103201321 is about 1033.2805576815.

Adding to 1103201321 its reverse (1231023011), we get a palindrome (2334224332).

The spelling of 1103201321 in words is "one billion, one hundred three million, two hundred one thousand, three hundred twenty-one".