21112132233321 has 12 divisors (see below), whose sum is σ = 30497298471172. Its totient is φ = 14073833426976.

The previous prime is 21112132233289. The next prime is 21112132233323. The reversal of 21112132233321 is 12333223121112.

21112132233321 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 2 + 1 + 322 + 3 + 332 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 844443372096 + 20267688861225 = 918936^2 + 4501965^2 .

It is not a de Polignac number, because 21112132233321 - 2⁵ = 21112132233289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21112132233323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76637806 + ... + 76912791.

Almost surely, 2^{21112132233321} is an apocalyptic number.

It is an amenable number.

21112132233321 is a deficient number, since it is larger than the sum of its proper divisors (9385166237851).

21112132233321 is a wasteful number, since it uses less digits than its factorization.

21112132233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153565880 (or 153565877 counting only the distinct ones).

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

Adding to 21112132233321 its reverse (12333223121112), we get a palindrome (33445355354433).

The spelling of 21112132233321 in words is "twenty-one trillion, one hundred twelve billion, one hundred thirty-two million, two hundred thirty-three thousand, three hundred twenty-one".