11000012000 has 96 divisors (see below), whose sum is σ = 28449701280. Its totient is φ = 4168396800.

The previous prime is 11000011973. The next prime is 11000012017. The reversal of 11000012000 is 21000011.

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 15 ways as a sum of consecutive naturals, for example, 3632 + ... + 148368.

It is an arithmetic number, because the mean of its divisors is an integer number (296351055).

Almost surely, 2^11000012000 is an apocalyptic number.

11000012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11000012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14224850640).

11000012000 is an abundant number, since it is smaller than the sum of its proper divisors (17449689280).

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

11000012000 is a wasteful number, since it uses less digits than its factorization.

11000012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144781 (or 144763 counting only the distinct ones).

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

Adding to 11000012000 its reverse (21000011), we get a palindrome (11021012011).

The spelling of 11000012000 in words is "eleven billion, twelve thousand".