22221305235 has 16 divisors (see below), whose sum is σ = 39504542880. Its totient is φ = 11851362720.

The previous prime is 22221305231. The next prime is 22221305341. The reversal of 22221305235 is 53250312222.

22221305235 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 130 + 523 + 5 = 666.

It is not a de Polignac number, because 22221305235 - 2² = 22221305231 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 = 22221305199 and 22221305208.

It is not an unprimeable number, because it can be changed into a prime (22221305231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82300996 + ... + 82301265.

It is an arithmetic number, because the mean of its divisors is an integer number (2469033930).

Almost surely, 2^22221305235 is an apocalyptic number.

22221305235 is a deficient number, since it is larger than the sum of its proper divisors (17283237645).

22221305235 is a wasteful number, since it uses less digits than its factorization.

22221305235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164602275 (or 164602269 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 22221305235 its reverse (53250312222), we get a palindrome (75471617457).

The spelling of 22221305235 in words is "twenty-two billion, two hundred twenty-one million, three hundred five thousand, two hundred thirty-five".