2121103443300 has 72 divisors (see below), whose sum is σ = 6145364484000. Its totient is φ = 564862129920.

The previous prime is 2121103443229. The next prime is 2121103443307. The reversal of 2121103443300 is 33443011212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2121103443307) 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 23 ways as a sum of consecutive naturals, for example, 4562025 + ... + 5005424.

It is an arithmetic number, because the mean of its divisors is an integer number (85352284500).

Almost surely, 2^{2121103443300} is an apocalyptic number.

2121103443300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121103443300 is an abundant number, since it is smaller than the sum of its proper divisors (4024261040700).

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

2121103443300 is a wasteful number, since it uses less digits than its factorization.

2121103443300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568205 (or 9568198 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2121103443300 its reverse (33443011212), we get a palindrome (2154546454512).

The spelling of 2121103443300 in words is "two trillion, one hundred twenty-one billion, one hundred three million, four hundred forty-three thousand, three hundred".