1100012000 has 48 divisors (see below), whose sum is σ = 2702739312. Its totient is φ = 440003200.

The previous prime is 1100011999. The next prime is 1100012027. The reversal of 1100012000 is 2100011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133502 + ... + 141501.

It is an arithmetic number, because the mean of its divisors is an integer number (56307069).

Almost surely, 2^1100012000 is an apocalyptic number.

1100012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100012000 is an abundant number, since it is smaller than the sum of its proper divisors (1602727312).

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

1100012000 is an equidigital number, since it uses as much as digits as its factorization.

1100012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275028 (or 275010 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1100012000 is about 33166.4288098674. The cubic root of 1100012000 is about 1032.2838691886.

Adding to 1100012000 its reverse (2100011), we get a palindrome (1102112011).

The spelling of 1100012000 in words is "one billion, one hundred million, twelve thousand".