2111001200 has 120 divisors (see below), whose sum is σ = 6323226240. Its totient is φ = 657964800.

The previous prime is 2111001169. The next prime is 2111001223. The reversal of 2111001200 is 21001112.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 3470 + ... + 65069.

It is an arithmetic number, because the mean of its divisors is an integer number (52693552).

Almost surely, 2^2111001200 is an apocalyptic number.

2111001200 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 2111001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3161613120).

2111001200 is an abundant number, since it is smaller than the sum of its proper divisors (4212225040).

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

2111001200 is a wasteful number, since it uses less digits than its factorization.

2111001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68575 (or 68564 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2111001200 is about 45945.6330895549. The cubic root of 2111001200 is about 1282.8114472479.

Adding to 2111001200 its reverse (21001112), we get a palindrome (2132002312).

The spelling of 2111001200 in words is "two billion, one hundred eleven million, one thousand, two hundred".