22202220111100 has 72 divisors (see below), whose sum is σ = 48875344277760. Its totient is φ = 8752895436480.

The previous prime is 22202220111091. The next prime is 22202220111103. The reversal of 22202220111100 is 111102220222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202220111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1951779 + ... + 6943621.

It is an arithmetic number, because the mean of its divisors is an integer number (678824226080).

Almost surely, 2^{22202220111100} is an apocalyptic number.

22202220111100 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 22202220111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24437672138880).

22202220111100 is an abundant number, since it is smaller than the sum of its proper divisors (26673124166660).

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

22202220111100 is a wasteful number, since it uses less digits than its factorization.

22202220111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992499 (or 4992492 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22202220111100 its reverse (111102220222), we get a palindrome (22313322331322).

The spelling of 22202220111100 in words is "twenty-two trillion, two hundred two billion, two hundred twenty million, one hundred eleven thousand, one hundred".