2121112332200 has 96 divisors (see below), whose sum is σ = 5074386390360. Its totient is φ = 824194176000.

The previous prime is 2121112332191. The next prime is 2121112332221. The reversal of 2121112332200 is 22332111212.

It can be written as a sum of positive squares in 12 ways, for example, as 876946094116 + 1244166238084 = 936454^2 + 1115422^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79982 + ... + 2061218.

Almost surely, 2^{2121112332200} is an apocalyptic number.

2121112332200 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 2121112332200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537193195180).

2121112332200 is an abundant number, since it is smaller than the sum of its proper divisors (2953274058160).

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

2121112332200 is a wasteful number, since it uses less digits than its factorization.

2121112332200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981407 (or 1981398 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121112332200 its reverse (22332111212), we get a palindrome (2143444443412).

The spelling of 2121112332200 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, three hundred thirty-two thousand, two hundred".