2121432341211 has 20 divisors (see below), whose sum is σ = 3171806694144. Its totient is φ = 1413059418000.

The previous prime is 2121432341173. The next prime is 2121432341213. The reversal of 2121432341211 is 1121432341212.

2121432341211 is a `hidden beast` number, since 2 + 1 + 214 + 3 + 23 + 412 + 11 = 666.

It is not a de Polignac number, because 2121432341211 - 2¹⁰ = 2121432340187 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2121432341213) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11284060 + ... + 11470521.

Almost surely, 2^{2121432341211} is an apocalyptic number.

2121432341211 is a deficient number, since it is larger than the sum of its proper divisors (1050374352933).

2121432341211 is a wasteful number, since it uses less digits than its factorization.

2121432341211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22755744 (or 22755735 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 2121432341211 its reverse (1121432341212), we get a palindrome (3242864682423).

Subtracting from 2121432341211 its reverse (1121432341212), we obtain a palindrome (999999999999).

The spelling of 2121432341211 in words is "two trillion, one hundred twenty-one billion, four hundred thirty-two million, three hundred forty-one thousand, two hundred eleven".