2121334331211 has 40 divisors (see below), whose sum is σ = 3263141929520. Its totient is φ = 1372369303872.

The previous prime is 2121334331183. The next prime is 2121334331309. The reversal of 2121334331211 is 1121334331212.

2121334331211 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 3 + 343 + 312 + 1 + 1 = 666.

It is not a de Polignac number, because 2121334331211 - 2⁹ = 2121334330699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121334331911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 202065 + ... + 2069661.

It is an arithmetic number, because the mean of its divisors is an integer number (81578548238).

Almost surely, 2^{2121334331211} is an apocalyptic number.

2121334331211 is a deficient number, since it is larger than the sum of its proper divisors (1141807598309).

2121334331211 is a wasteful number, since it uses less digits than its factorization.

2121334331211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868025 (or 1868016 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 2121334331211 its reverse (1121334331212), we get a palindrome (3242668662423).

Subtracting from 2121334331211 its reverse (1121334331212), we obtain a palindrome (999999999999).

The spelling of 2121334331211 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-four million, three hundred thirty-one thousand, two hundred eleven".