1113321001 has 8 divisors (see below), whose sum is σ = 1199220680. Its totient is φ = 1027458432.

The previous prime is 1113320963. The next prime is 1113321023. The reversal of 1113321001 is 1001233111.

It can be written as a sum of positive squares in 4 ways, for example, as 511845376 + 601475625 = 22624^2 + 24525^2 .

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

It is not a de Polignac number, because 1113321001 - 2¹⁵ = 1113288233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113324001) 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, 108355 + ... + 118183.

It is an arithmetic number, because the mean of its divisors is an integer number (149902585).

Almost surely, 2^1113321001 is an apocalyptic number.

It is an amenable number.

1113321001 is a deficient number, since it is larger than the sum of its proper divisors (85899679).

1113321001 is an equidigital number, since it uses as much as digits as its factorization.

1113321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18555.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113321001 is about 33366.4652158421. The cubic root of 1113321001 is about 1036.4303780877.

Adding to 1113321001 its reverse (1001233111), we get a palindrome (2114554112).

The spelling of 1113321001 in words is "one billion, one hundred thirteen million, three hundred twenty-one thousand, one".