22220022120 has 64 divisors (see below), whose sum is σ = 66953805120. Its totient is φ = 5899229184.

The previous prime is 22220022103. The next prime is 22220022127. The reversal of 22220022120 is 2122002222.

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 22220022120.

It is not an unprimeable number, because it can be changed into a prime (22220022127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380617 + ... + 435096.

It is an arithmetic number, because the mean of its divisors is an integer number (1046153205).

Almost surely, 2^22220022120 is an apocalyptic number.

22220022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220022120 is an abundant number, since it is smaller than the sum of its proper divisors (44733783000).

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

22220022120 is a wasteful number, since it uses less digits than its factorization.

22220022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815954 (or 815950 counting only the distinct ones).

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

Adding to 22220022120 its reverse (2122002222), we get a palindrome (24342024342).

The spelling of 22220022120 in words is "twenty-two billion, two hundred twenty million, twenty-two thousand, one hundred twenty".