2121200022013 has 16 divisors (see below), whose sum is σ = 2156152078080. Its totient is φ = 2086542009216.

The previous prime is 2121200022001. The next prime is 2121200022017. The reversal of 2121200022013 is 3102200021212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2121200022013 - 2⁵ = 2121200021981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121200022017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24537081 + ... + 24623377.

It is an arithmetic number, because the mean of its divisors is an integer number (134759504880).

Almost surely, 2^{2121200022013} is an apocalyptic number.

It is an amenable number.

2121200022013 is a deficient number, since it is larger than the sum of its proper divisors (34952056067).

2121200022013 is a wasteful number, since it uses less digits than its factorization.

2121200022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87996.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2121200022013 its reverse (3102200021212), we get a palindrome (5223400043225).

The spelling of 2121200022013 in words is "two trillion, one hundred twenty-one billion, two hundred million, twenty-two thousand, thirteen".