22134443121 has 36 divisors (see below), whose sum is σ = 37397502324. Its totient is φ = 12578328000.

The previous prime is 22134443119. The next prime is 22134443183. The reversal of 22134443121 is 12134443122.

22134443121 is a `hidden beast` number, since 2 + 2 + 1 + 344 + 4 + 312 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11179890225 + 10954552896 = 105735^2 + 104664^2 .

It is not a de Polignac number, because 22134443121 - 2¹ = 22134443119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22134443521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58830 + ... + 218471.

It is an arithmetic number, because the mean of its divisors is an integer number (1038819509).

Almost surely, 2^22134443121 is an apocalyptic number.

22134443121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22134443121 is a deficient number, since it is larger than the sum of its proper divisors (15263059203).

22134443121 is a wasteful number, since it uses less digits than its factorization.

22134443121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277502 (or 277492 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 22134443121 its reverse (12134443122), we get a palindrome (34268886243).

Subtracting from 22134443121 its reverse (12134443122), we obtain a palindrome (9999999999).

It can be divided in two parts, 2213444 and 3121, that added together give a triangular number (2216565 = T₂₁₀₅).

The spelling of 22134443121 in words is "twenty-two billion, one hundred thirty-four million, four hundred forty-three thousand, one hundred twenty-one".