1111110001000 has 32 divisors (see below), whose sum is σ = 2599997404680. Its totient is φ = 444444000000.

The previous prime is 1111110000997. The next prime is 1111110001009. The reversal of 1111110001000 is 1000111111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 518120677636 + 592989323364 = 719806^2 + 770058^2 .

It is not an unprimeable number, because it can be changed into a prime (1111110001009) 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, 555554001 + ... + 555556000.

Almost surely, 2^{1111110001000} is an apocalyptic number.

1111110001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111110001000 is an abundant number, since it is smaller than the sum of its proper divisors (1488887403680).

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

1111110001000 is a wasteful number, since it uses less digits than its factorization.

1111110001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111110022 (or 1111110008 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 1111110001000 its reverse (1000111111), we get a palindrome (1112110112111).

The spelling of 1111110001000 in words is "one trillion, one hundred eleven billion, one hundred ten million, one thousand".