22221134433 has 20 divisors (see below), whose sum is σ = 33200640660. Its totient is φ = 14811364512.

The previous prime is 22221134431. The next prime is 22221134477. The reversal of 22221134433 is 33443112222.

22221134433 is a `hidden beast` number, since 2 + 2 + 2 + 211 + 3 + 443 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16955164944 + 5265969489 = 130212^2 + 72567^2 .

It is not a de Polignac number, because 22221134433 - 2¹ = 22221134431 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 22221134397 and 22221134406.

It is not an unprimeable number, because it can be changed into a prime (22221134431) 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, 479823 + ... + 524091.

It is an arithmetic number, because the mean of its divisors is an integer number (1660032033).

Almost surely, 2^22221134433 is an apocalyptic number.

It is an amenable number.

22221134433 is a deficient number, since it is larger than the sum of its proper divisors (10979506227).

22221134433 is an equidigital number, since it uses as much as digits as its factorization.

22221134433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50478 (or 50469 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 22221134433 its reverse (33443112222), we get a palindrome (55664246655).

The spelling of 22221134433 in words is "twenty-two billion, two hundred twenty-one million, one hundred thirty-four thousand, four hundred thirty-three".