22022220442 has 4 divisors (see below), whose sum is σ = 33033330666. Its totient is φ = 11011110220.

The previous prime is 22022220421. The next prime is 22022220511. The reversal of 22022220442 is 24402222022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21426811641 + 595408801 = 146379^2 + 24401^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505555109 + ... + 5505555112.

Almost surely, 2^22022220442 is an apocalyptic number.

22022220442 is a deficient number, since it is larger than the sum of its proper divisors (11011110224).

22022220442 is a wasteful number, since it uses less digits than its factorization.

22022220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011110223.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22022220442 its reverse (24402222022), we get a palindrome (46424442464).

The spelling of 22022220442 in words is "twenty-two billion, twenty-two million, two hundred twenty thousand, four hundred forty-two".