1111002000 has 80 divisors (see below), whose sum is σ = 3581889792. Its totient is φ = 296265600.

The previous prime is 1111001999. The next prime is 1111002049. The reversal of 1111002000 is 2001111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1111002000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86584 + ... + 98583.

Almost surely, 2^1111002000 is an apocalyptic number.

1111002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111002000 is an abundant number, since it is smaller than the sum of its proper divisors (2470887792).

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

1111002000 is a wasteful number, since it uses less digits than its factorization.

1111002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185193 (or 185177 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1111002000 is about 33331.6966264845. The cubic root of 1111002000 is about 1035.7102641823.

Adding to 1111002000 its reverse (2001111), we get a palindrome (1113003111).

The spelling of 1111002000 in words is "one billion, one hundred eleven million, two thousand".