22111002220 has 24 divisors (see below), whose sum is σ = 46441433808. Its totient is φ = 8842814400.

The previous prime is 22111002197. The next prime is 22111002227. The reversal of 22111002220 is 2220011122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22111002220.

It is not an unprimeable number, because it can be changed into a prime (22111002227) 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 7 ways as a sum of consecutive naturals, for example, 18535 + ... + 211105.

It is an arithmetic number, because the mean of its divisors is an integer number (1935059742).

Almost surely, 2^22111002220 is an apocalyptic number.

22111002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111002220 is an abundant number, since it is smaller than the sum of its proper divisors (24330431588).

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

22111002220 is a wasteful number, since it uses less digits than its factorization.

22111002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198321 (or 198319 counting only the distinct ones).

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

Adding to 22111002220 its reverse (2220011122), we get a palindrome (24331013342).

The spelling of 22111002220 in words is "twenty-two billion, one hundred eleven million, two thousand, two hundred twenty".