222001223312100 has 144 divisors (see below), whose sum is σ = 643958670257280. Its totient is φ = 59049753984000.

The previous prime is 222001223312027. The next prime is 222001223312111. The reversal of 222001223312100 is 1213322100222.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271362466 + ... + 272179334.

It is an arithmetic number, because the mean of its divisors is an integer number (4471935210120).

Almost surely, 2^{222001223312100} is an apocalyptic number.

222001223312100 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 222001223312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321979335128640).

222001223312100 is an abundant number, since it is smaller than the sum of its proper divisors (421957446945180).

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

222001223312100 is a wasteful number, since it uses less digits than its factorization.

222001223312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819190 (or 819183 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222001223312100 its reverse (1213322100222), we get a palindrome (223214545412322).

The spelling of 222001223312100 in words is "two hundred twenty-two trillion, one billion, two hundred twenty-three million, three hundred twelve thousand, one hundred".