22220101221220 has 96 divisors (see below), whose sum is σ = 53779575951360. Its totient is φ = 7554028809600.

The previous prime is 22220101221191. The next prime is 22220101221221. The reversal of 22220101221220 is 2212210102222.

It is not an unprimeable number, because it can be changed into a prime (22220101221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10602801 + ... + 12524359.

It is an arithmetic number, because the mean of its divisors is an integer number (560203916160).

Almost surely, 2^{22220101221220} is an apocalyptic number.

22220101221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22220101221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26889787975680).

22220101221220 is an abundant number, since it is smaller than the sum of its proper divisors (31559474730140).

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

22220101221220 is a wasteful number, since it uses less digits than its factorization.

22220101221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922273 (or 1922271 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22220101221220 its reverse (2212210102222), we get a palindrome (24432311323442).

The spelling of 22220101221220 in words is "twenty-two trillion, two hundred twenty billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty".