20222222212222 has 16 divisors (see below), whose sum is σ = 31441694689440. Its totient is φ = 9743043634912.

The previous prime is 20222222212217. The next prime is 20222222212267. The reversal of 20222222212222 is 22221222222202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346550353 + ... + 346608700.

It is an arithmetic number, because the mean of its divisors is an integer number (1965105918090).

Almost surely, 2^{20222222212222} is an apocalyptic number.

20222222212222 is a deficient number, since it is larger than the sum of its proper divisors (11219472477218).

20222222212222 is a wasteful number, since it uses less digits than its factorization.

20222222212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693159587.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20222222212222 its reverse (22221222222202), we get a palindrome (42443444434424).

The spelling of 20222222212222 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".