1001223875 has 16 divisors (see below), whose sum is σ = 1250919072. Its totient is φ = 800087200.

The previous prime is 1001223871. The next prime is 1001223889. The reversal of 1001223875 is 5783221001.

It is not a de Polignac number, because 1001223875 - 2² = 1001223871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001223871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122672 + ... + 130578.

It is an arithmetic number, because the mean of its divisors is an integer number (78182442).

Almost surely, 2^1001223875 is an apocalyptic number.

1001223875 is a deficient number, since it is larger than the sum of its proper divisors (249695197).

1001223875 is an equidigital number, since it uses as much as digits as its factorization.

1001223875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8935 (or 8925 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1001223875 is about 31642.1218473098. The cubic root of 1001223875 is about 1000.4077920164.

Adding to 1001223875 its reverse (5783221001), we get a palindrome (6784444876).

The spelling of 1001223875 in words is "one billion, one million, two hundred twenty-three thousand, eight hundred seventy-five".