1000111001004 has 72 divisors (see below), whose sum is σ = 2601992680560. Its totient is φ = 323697830400.

The previous prime is 1000111001003. The next prime is 1000111001063. The reversal of 1000111001004 is 4001001110001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1000111001003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1294209 + ... + 1917080.

It is an arithmetic number, because the mean of its divisors is an integer number (36138787230).

Almost surely, 2^{1000111001004} is an apocalyptic number.

It is an amenable number.

1000111001004 is an abundant number, since it is smaller than the sum of its proper divisors (1601881679556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000111001004 is a wasteful number, since it uses less digits than its factorization.

1000111001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211551 (or 3211546 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000111001004 its reverse (4001001110001), we get a palindrome (5001112111005).

The spelling of 1000111001004 in words is "one trillion, one hundred eleven million, one thousand, four".