22012220220 has 96 divisors (see below), whose sum is σ = 65174409216. Its totient is φ = 5542003200.

The previous prime is 22012220207. The next prime is 22012220239. The reversal of 22012220220 is 2202221022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22012220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68064 + ... + 220583.

It is an arithmetic number, because the mean of its divisors is an integer number (678900096).

Almost surely, 2^22012220220 is an apocalyptic number.

22012220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012220220 is an abundant number, since it is smaller than the sum of its proper divisors (43162188996).

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

22012220220 is a wasteful number, since it uses less digits than its factorization.

22012220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288731 (or 288729 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22012220220 its reverse (2202221022), we get a palindrome (24214441242).

The spelling of 22012220220 in words is "twenty-two billion, twelve million, two hundred twenty thousand, two hundred twenty".