222101221200 has 240 divisors, whose sum is σ = 746990374080. Its totient is φ = 56330588160.

The previous prime is 222101221163. The next prime is 222101221201. The reversal of 222101221200 is 2122101222.

It is a tau number, because it is divible by the number of its divisors (240).

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 222101221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101221201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2283972 + ... + 2379228.

It is an arithmetic number, because the mean of its divisors is an integer number (3112459892).

Almost surely, 2^222101221200 is an apocalyptic number.

222101221200 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 222101221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373495187040).

222101221200 is an abundant number, since it is smaller than the sum of its proper divisors (524889152880).

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

222101221200 is a wasteful number, since it uses less digits than its factorization.

222101221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95374 (or 95363 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222101221200 its reverse (2122101222), we get a palindrome (224223322422).

The spelling of 222101221200 in words is "two hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, two hundred".