221240132204 has 96 divisors (see below), whose sum is σ = 493586110080. Its totient is φ = 84396275712.

The previous prime is 221240132203. The next prime is 221240132207. The reversal of 221240132204 is 402231042122.

It is a self number, because there is not a number n which added to its sum of digits gives 221240132204.

It is not an unprimeable number, because it can be changed into a prime (221240132203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8399984 + ... + 8426280.

It is an arithmetic number, because the mean of its divisors is an integer number (5141521980).

Almost surely, 2^221240132204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221240132204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246793055040).

221240132204 is an abundant number, since it is smaller than the sum of its proper divisors (272345977876).

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

221240132204 is a wasteful number, since it uses less digits than its factorization.

221240132204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27147 (or 27145 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 221240132204 its reverse (402231042122), we get a palindrome (623471174326).

The spelling of 221240132204 in words is "two hundred twenty-one billion, two hundred forty million, one hundred thirty-two thousand, two hundred four".