22220205442 has 8 divisors (see below), whose sum is σ = 33340942476. Its totient is φ = 11106557952.

The previous prime is 22220205433. The next prime is 22220205457. The reversal of 22220205442 is 24450202222.

It can be written as a sum of positive squares in 2 ways, for example, as 13763747761 + 8456457681 = 117319^2 + 91959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×22220205442⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1764543 + ... + 1777090.

Almost surely, 2^22220205442 is an apocalyptic number.

22220205442 is a deficient number, since it is larger than the sum of its proper divisors (11120737034).

22220205442 is a wasteful number, since it uses less digits than its factorization.

22220205442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544772.

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 22220205442 its reverse (24450202222), we get a palindrome (46670407664).

The spelling of 22220205442 in words is "twenty-two billion, two hundred twenty million, two hundred five thousand, four hundred forty-two".