22021222022 has 4 divisors (see below), whose sum is σ = 33031833036. Its totient is φ = 11010611010.

The previous prime is 22021222019. The next prime is 22021222037. The reversal of 22021222022 is 22022212022.

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

It is a congruent number.

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, 5505305504 + ... + 5505305507.

It is an arithmetic number, because the mean of its divisors is an integer number (8257958259).

Almost surely, 2^22021222022 is an apocalyptic number.

22021222022 is a deficient number, since it is larger than the sum of its proper divisors (11010611014).

22021222022 is a wasteful number, since it uses less digits than its factorization.

22021222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010611013.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 22021222022 its reverse (22022212022), we get a palindrome (44043434044).

The spelling of 22021222022 in words is "twenty-two billion, twenty-one million, two hundred twenty-two thousand, twenty-two".