221203201104 has 160 divisors (see below), whose sum is σ = 645852412800. Its totient is φ = 72477158400.

The previous prime is 221203201091. The next prime is 221203201127. The reversal of 221203201104 is 401102302122.

It is a happy number.

221203201104 is a `hidden beast` number, since 221 + 20 + 320 + 1 + 104 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6046612 + ... + 6083084.

It is an arithmetic number, because the mean of its divisors is an integer number (4036577580).

Almost surely, 2^221203201104 is an apocalyptic number.

221203201104 is a gapful number since it is divisible by the number (24) 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 221203201104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322926206400).

221203201104 is an abundant number, since it is smaller than the sum of its proper divisors (424649211696).

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

221203201104 is a wasteful number, since it uses less digits than its factorization.

221203201104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36730 (or 36718 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 221203201104 its reverse (401102302122), we get a palindrome (622305503226).

The spelling of 221203201104 in words is "two hundred twenty-one billion, two hundred three million, two hundred one thousand, one hundred four".