20022221111100 has 72 divisors (see below), whose sum is σ = 62387187433200. Its totient is φ = 4928546734080.

The previous prime is 20022221111063. The next prime is 20022221111117. The reversal of 20022221111100 is 111112222002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20022221111100.

It is a congruent number.

It is an unprimeable number.

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, 2566947525 + ... + 2566955324.

It is an arithmetic number, because the mean of its divisors is an integer number (866488714350).

Almost surely, 2^{20022221111100} is an apocalyptic number.

20022221111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022221111100 is an abundant number, since it is smaller than the sum of its proper divisors (42364966322100).

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

20022221111100 is a wasteful number, since it uses less digits than its factorization.

20022221111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133902879 (or 5133902872 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20022221111100 its reverse (111112222002), we get a palindrome (20133333333102).

It can be divided in two parts, 20022 and 221111100, that added together give a palindrome (221131122).

The spelling of 20022221111100 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred".