2121110222200 has 48 divisors (see below), whose sum is σ = 5101635807000. Its totient is φ = 819187393920.

The previous prime is 2121110222167. The next prime is 2121110222201. The reversal of 2121110222200 is 22220111212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121110222201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 182848530 + ... + 182860129.

Almost surely, 2^{2121110222200} is an apocalyptic number.

2121110222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121110222200 is an abundant number, since it is smaller than the sum of its proper divisors (2980525584800).

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

2121110222200 is a wasteful number, since it uses less digits than its factorization.

2121110222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365708704 (or 365708695 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121110222200 its reverse (22220111212), we get a palindrome (2143330333412).

The spelling of 2121110222200 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, two hundred".