2121101313211 has 16 divisors (see below), whose sum is σ = 2301500029248. Its totient is φ = 1946919500800.

The previous prime is 2121101313181. The next prime is 2121101313223. The reversal of 2121101313211 is 1123131011212.

It is a cyclic number.

It is not a de Polignac number, because 2121101313211 - 2¹¹ = 2121101311163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121101313241) 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, 1328301 + ... + 2450833.

It is an arithmetic number, because the mean of its divisors is an integer number (143843751828).

Almost surely, 2^{2121101313211} is an apocalyptic number.

2121101313211 is a deficient number, since it is larger than the sum of its proper divisors (180398716037).

2121101313211 is a wasteful number, since it uses less digits than its factorization.

2121101313211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125302.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2121101313211 its reverse (1123131011212), we get a palindrome (3244232324423).

The spelling of 2121101313211 in words is "two trillion, one hundred twenty-one billion, one hundred one million, three hundred thirteen thousand, two hundred eleven".