2121103102200 has 96 divisors (see below), whose sum is σ = 6575896191600. Its totient is φ = 565586498560.

The previous prime is 2121103102199. The next prime is 2121103102211. The reversal of 2121103102200 is 22013011212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2121103102200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8659006 + ... + 8900594.

Almost surely, 2^{2121103102200} is an apocalyptic number.

2121103102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121103102200 is an abundant number, since it is smaller than the sum of its proper divisors (4454793089400).

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

2121103102200 is a wasteful number, since it uses less digits than its factorization.

2121103102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256241 (or 256232 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2121103102200 its reverse (22013011212), we get a palindrome (2143116113412).

The spelling of 2121103102200 in words is "two trillion, one hundred twenty-one billion, one hundred three million, one hundred two thousand, two hundred".