222203021100 has 108 divisors (see below), whose sum is σ = 653991907464. Its totient is φ = 58249557760.

The previous prime is 222203021087. The next prime is 222203021101. The reversal of 222203021100 is 1120302222.

It is a happy number.

222203021100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222203021100.

It is not an unprimeable number, because it can be changed into a prime (222203021101) 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 35 ways as a sum of consecutive naturals, for example, 937912 + ... + 1150688.

Almost surely, 2^222203021100 is an apocalyptic number.

222203021100 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 222203021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326995953732).

222203021100 is an abundant number, since it is smaller than the sum of its proper divisors (431788886364).

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

222203021100 is a wasteful number, since it uses less digits than its factorization.

222203021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212912 (or 212846 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 222203021100 its reverse (1120302222), we get a palindrome (223323323322).

The spelling of 222203021100 in words is "two hundred twenty-two billion, two hundred three million, twenty-one thousand, one hundred".