22222110221220 has 192 divisors, whose sum is σ = 77003912434176. Its totient is φ = 4662716866560.

The previous prime is 22222110221209. The next prime is 22222110221221. The reversal of 22222110221220 is 2212201122222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22222110221221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10254789 + ... + 12231308.

It is an arithmetic number, because the mean of its divisors is an integer number (401062043928).

Almost surely, 2^{22222110221220} is an apocalyptic number.

22222110221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222110221220 is an abundant number, since it is smaller than the sum of its proper divisors (54781802212956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22222110221220 is a wasteful number, since it uses less digits than its factorization.

22222110221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22486310 (or 22486308 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222110221220 its reverse (2212201122222), we get a palindrome (24434311343442).

The spelling of 22222110221220 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty".