222201222100 has 288 divisors, whose sum is σ = 597044286720. Its totient is φ = 70625280000.

The previous prime is 222201222079. The next prime is 222201222137. The reversal of 222201222100 is 1222102222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33215556 + ... + 33222244.

It is an arithmetic number, because the mean of its divisors is an integer number (2073070440).

Almost surely, 2^222201222100 is an apocalyptic number.

222201222100 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 222201222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298522143360).

222201222100 is an abundant number, since it is smaller than the sum of its proper divisors (374843064620).

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

222201222100 is a wasteful number, since it uses less digits than its factorization.

222201222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851 (or 6844 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222201222100 its reverse (1222102222), we get a palindrome (223423324322).

It can be divided in two parts, 22220122 and 2100, that added together give a palindrome (22222222).

The spelling of 222201222100 in words is "two hundred twenty-two billion, two hundred one million, two hundred twenty-two thousand, one hundred".