20222211100 has 144 divisors (see below), whose sum is σ = 56851916800. Its totient is φ = 6063102720.

The previous prime is 20222211083. The next prime is 20222211167. The reversal of 20222211100 is 111222202.

It is a happy number.

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

It is a congruent number.

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, 114421 + ... + 231379.

Almost surely, 2^20222211100 is an apocalyptic number.

20222211100 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 20222211100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28425958400).

20222211100 is an abundant number, since it is smaller than the sum of its proper divisors (36629705700).

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

20222211100 is a wasteful number, since it uses less digits than its factorization.

20222211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117012 (or 117005 counting only the distinct ones).

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

Adding to 20222211100 its reverse (111222202), we get a palindrome (20333433302).

It can be divided in two parts, 2022 and 2211100, that added together give a palindrome (2213122).

The spelling of 20222211100 in words is "twenty billion, two hundred twenty-two million, two hundred eleven thousand, one hundred".