222021200100 has 216 divisors, whose sum is σ = 751443467040. Its totient is φ = 50463598080.

The previous prime is 222021200077. The next prime is 222021200123. The reversal of 222021200100 is 1002120222.

It is an interprime number because it is at equal distance from previous prime (222021200077) and next prime (222021200123).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2589112 + ... + 2673488.

It is an arithmetic number, because the mean of its divisors is an integer number (3478904940).

Almost surely, 2^222021200100 is an apocalyptic number.

222021200100 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 222021200100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375721733520).

222021200100 is an abundant number, since it is smaller than the sum of its proper divisors (529422266940).

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

222021200100 is a wasteful number, since it uses less digits than its factorization.

222021200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84587 (or 84573 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 222021200100 its reverse (1002120222), we get a palindrome (223023320322).

The spelling of 222021200100 in words is "two hundred twenty-two billion, twenty-one million, two hundred thousand, one hundred".