2011230000 has 500 divisors, whose sum is σ = 7874579328. Its totient is φ = 492480000.

The previous prime is 2011229989. The next prime is 2011230017. The reversal of 2011230000 is 321102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (500).

It is a super-2 number, since 2×2011230000² = 8090092225800000000, which contains 22 as substring.

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

It is a nialpdrome in base 15.

It is a zygodrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 10529905 + ... + 10530095.

Almost surely, 2^2011230000 is an apocalyptic number.

2011230000 is a gapful number since it is divisible by the number (20) 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 2011230000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3937289664).

2011230000 is an abundant number, since it is smaller than the sum of its proper divisors (5863349328).

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

2011230000 is a wasteful number, since it uses less digits than its factorization.

2011230000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2011230000 is about 44846.7390118836. The cubic root of 2011230000 is about 1262.2748021686.

Adding to 2011230000 its reverse (321102), we get a palindrome (2011551102).

The spelling of 2011230000 in words is "two billion, eleven million, two hundred thirty thousand".