2121200112213 has 128 divisors (see below), whose sum is σ = 4111563939840. Its totient is φ = 1048857984000.

The previous prime is 2121200112197. The next prime is 2121200112221. The reversal of 2121200112213 is 3122110021212.

It is not a de Polignac number, because 2121200112213 - 2⁴ = 2121200112197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200110213) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10382856 + ... + 10585182.

It is an arithmetic number, because the mean of its divisors is an integer number (32121593280).

Almost surely, 2^{2121200112213} is an apocalyptic number.

It is an amenable number.

2121200112213 is a deficient number, since it is larger than the sum of its proper divisors (1990363827627).

2121200112213 is a wasteful number, since it uses less digits than its factorization.

2121200112213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202624 (or 202618 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2121200112213 its reverse (3122110021212), we get a palindrome (5243310133425).

The spelling of 2121200112213 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred twelve thousand, two hundred thirteen".