2121313312200 has 48 divisors (see below), whose sum is σ = 6576071269680. Its totient is φ = 565683549760.

The previous prime is 2121313312169. The next prime is 2121313312207. The reversal of 2121313312200 is 22133131212.

It is not an unprimeable number, because it can be changed into a prime (2121313312207) 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, 1767760494 + ... + 1767761693.

It is an arithmetic number, because the mean of its divisors is an integer number (137001484785).

Almost surely, 2^{2121313312200} is an apocalyptic number.

2121313312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121313312200 is an abundant number, since it is smaller than the sum of its proper divisors (4454757957480).

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

2121313312200 is a wasteful number, since it uses less digits than its factorization.

2121313312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535522206 (or 3535522197 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2121313312200 its reverse (22133131212), we get a palindrome (2143446443412).

The spelling of 2121313312200 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, three hundred twelve thousand, two hundred".