22120221100 has 18 divisors (see below), whose sum is σ = 48000880004. Its totient is φ = 8848088400.

The previous prime is 22120221091. The next prime is 22120221103. The reversal of 22120221100 is 112202122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22120221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110601006 + ... + 110601205.

Almost surely, 2^22120221100 is an apocalyptic number.

22120221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120221100 is an abundant number, since it is smaller than the sum of its proper divisors (25880658904).

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

22120221100 is a wasteful number, since it uses less digits than its factorization.

22120221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221202225 (or 221202218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120221100 its reverse (112202122), we get a palindrome (22232423222).

It can be divided in two parts, 2212022 and 1100, that added together give a palindrome (2213122).

The spelling of 22120221100 in words is "twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, one hundred".