2120030000 has 100 divisors (see below), whose sum is σ = 5599713768. Its totient is φ = 770880000.

The previous prime is 2120029981. The next prime is 2120030023. The reversal of 2120030000 is 300212.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2120030000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100364 + ... + 119636.

Almost surely, 2^2120030000 is an apocalyptic number.

2120030000 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 2120030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2799856884).

2120030000 is an abundant number, since it is smaller than the sum of its proper divisors (3479683768).

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

2120030000 is a wasteful number, since it uses less digits than its factorization.

2120030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19312 (or 19291 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 2120030000 is about 46043.7835109149. The cubic root of 2120030000 is about 1284.6377172672.

Adding to 2120030000 its reverse (300212), we get a palindrome (2120330212).

The spelling of 2120030000 in words is "two billion, one hundred twenty million, thirty thousand".