22220021222 has 8 divisors (see below), whose sum is σ = 38091464976. Its totient is φ = 9522866232.

The previous prime is 22220021177. The next prime is 22220021261. The reversal of 22220021222 is 22212002222.

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

It is a super-2 number, since 2×22220021222² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22220021222.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 793572173 + ... + 793572200.

It is an arithmetic number, because the mean of its divisors is an integer number (4761433122).

Almost surely, 2^22220021222 is an apocalyptic number.

22220021222 is a deficient number, since it is larger than the sum of its proper divisors (15871443754).

22220021222 is a wasteful number, since it uses less digits than its factorization.

22220021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587144382.

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

Adding to 22220021222 its reverse (22212002222), we get a palindrome (44432023444).

The spelling of 22220021222 in words is "twenty-two billion, two hundred twenty million, twenty-one thousand, two hundred twenty-two".