22220220100 has 144 divisors (see below), whose sum is σ = 53095976640. Its totient is φ = 8021260800.

The previous prime is 22220220091. The next prime is 22220220193. The reversal of 22220220100 is 102202222.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16183014 + ... + 16184386.

It is an arithmetic number, because the mean of its divisors is an integer number (368722060).

Almost surely, 2^22220220100 is an apocalyptic number.

22220220100 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 22220220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26547988320).

22220220100 is an abundant number, since it is smaller than the sum of its proper divisors (30875756540).

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

22220220100 is a wasteful number, since it uses less digits than its factorization.

22220220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22220220100 its reverse (102202222), we get a palindrome (22322422322).

The spelling of 22220220100 in words is "twenty-two billion, two hundred twenty million, two hundred twenty thousand, one hundred".