20112222200 has 96 divisors (see below), whose sum is σ = 53931741600. Its totient is φ = 6832304640.

The previous prime is 20112222199. The next prime is 20112222211. The reversal of 20112222200 is 222221102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86702 + ... + 218498.

It is an arithmetic number, because the mean of its divisors is an integer number (561788975).

Almost surely, 2^20112222200 is an apocalyptic number.

20112222200 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 20112222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26965870800).

20112222200 is an abundant number, since it is smaller than the sum of its proper divisors (33819519400).

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

20112222200 is a wasteful number, since it uses less digits than its factorization.

20112222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131929 (or 131920 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20112222200 its reverse (222221102), we get a palindrome (20334443302).

It can be divided in two parts, 201122 and 22200, that added together give a palindrome (223322).

The spelling of 20112222200 in words is "twenty billion, one hundred twelve million, two hundred twenty-two thousand, two hundred".