2121330143200 has 72 divisors (see below), whose sum is σ = 5183011547280. Its totient is φ = 847825152000.

The previous prime is 2121330143099. The next prime is 2121330143201. The reversal of 2121330143200 is 23410331212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121330143201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143140 + ... + 2064739.

It is an arithmetic number, because the mean of its divisors is an integer number (71986271490).

Almost surely, 2^{2121330143200} is an apocalyptic number.

2121330143200 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 2121330143200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2591505773640).

2121330143200 is an abundant number, since it is smaller than the sum of its proper divisors (3061681404080).

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

2121330143200 is a wasteful number, since it uses less digits than its factorization.

2121330143200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209100 (or 2209087 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2121330143200 its reverse (23410331212), we get a palindrome (2144740474412).

The spelling of 2121330143200 in words is "two trillion, one hundred twenty-one billion, three hundred thirty million, one hundred forty-three thousand, two hundred".