2121310302100 has 216 divisors, whose sum is σ = 5369281968960. Its totient is φ = 725335564800.

The previous prime is 2121310302071. The next prime is 2121310302113. The reversal of 2121310302100 is 12030131212.

It is a congruent number.

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, 16355104 + ... + 16484296.

Almost surely, 2^{2121310302100} is an apocalyptic number.

2121310302100 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 2121310302100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2684640984480).

2121310302100 is an abundant number, since it is smaller than the sum of its proper divisors (3247971666860).

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

2121310302100 is a wasteful number, since it uses less digits than its factorization.

2121310302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129311 (or 129293 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121310302100 its reverse (12030131212), we get a palindrome (2133340433312).

The spelling of 2121310302100 in words is "two trillion, one hundred twenty-one billion, three hundred ten million, three hundred two thousand, one hundred".