1103312021 has 8 divisors (see below), whose sum is σ = 1261188864. Its totient is φ = 945500400.

The previous prime is 1103312003. The next prime is 1103312027. The reversal of 1103312021 is 1202133011.

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 1103312021 - 2¹⁰ = 1103310997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103311987 and 1103312005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103312027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27971 + ... + 54671.

It is an arithmetic number, because the mean of its divisors is an integer number (157648608).

Almost surely, 2^1103312021 is an apocalyptic number.

It is an amenable number.

1103312021 is a deficient number, since it is larger than the sum of its proper divisors (157876843).

1103312021 is an equidigital number, since it uses as much as digits as its factorization.

1103312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32611.

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

The square root of 1103312021 is about 33216.1409709195. The cubic root of 1103312021 is about 1033.3151178082.

Adding to 1103312021 its reverse (1202133011), we get a palindrome (2305445032).

The spelling of 1103312021 in words is "one billion, one hundred three million, three hundred twelve thousand, twenty-one".