2121201333300 has 72 divisors (see below), whose sum is σ = 7014105749056. Its totient is φ = 484846018560.

The previous prime is 2121201333283. The next prime is 2121201333301. The reversal of 2121201333300 is 33331021212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201333301) 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, 505045837 + ... + 505050036.

Almost surely, 2^{2121201333300} is an apocalyptic number.

2121201333300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121201333300 is an abundant number, since it is smaller than the sum of its proper divisors (4892904415756).

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

2121201333300 is a wasteful number, since it uses less digits than its factorization.

2121201333300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010095897 (or 1010095890 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2121201333300 its reverse (33331021212), we get a palindrome (2154532354512).

The spelling of 2121201333300 in words is "two trillion, one hundred twenty-one billion, two hundred one million, three hundred thirty-three thousand, three hundred".