2121112203300 has 216 divisors, whose sum is σ = 6888325563392. Its totient is φ = 545361984000.

The previous prime is 2121112203293. The next prime is 2121112203337. The reversal of 2121112203300 is 33022111212.

2121112203300 is a `hidden beast` number, since 2 + 1 + 2 + 111 + 220 + 330 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7420632 + ... + 7701168.

Almost surely, 2^{2121112203300} is an apocalyptic number.

2121112203300 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 2121112203300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3444162781696).

2121112203300 is an abundant number, since it is smaller than the sum of its proper divisors (4767213360092).

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

2121112203300 is a wasteful number, since it uses less digits than its factorization.

2121112203300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280859 (or 280849 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121112203300 its reverse (33022111212), we get a palindrome (2154134314512).

The spelling of 2121112203300 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred three thousand, three hundred".