221103134430 has 32 divisors (see below), whose sum is σ = 544989350304. Its totient is φ = 57367299456.

The previous prime is 221103134401. The next prime is 221103134443. The reversal of 221103134430 is 34431301122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221103134430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99594897 + ... + 99597116.

It is an arithmetic number, because the mean of its divisors is an integer number (17030917197).

Almost surely, 2^221103134430 is an apocalyptic number.

221103134430 is an abundant number, since it is smaller than the sum of its proper divisors (323886215874).

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

221103134430 is a wasteful number, since it uses less digits than its factorization.

221103134430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199192060.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221103134430 its reverse (34431301122), we get a palindrome (255534435552).

The spelling of 221103134430 in words is "two hundred twenty-one billion, one hundred three million, one hundred thirty-four thousand, four hundred thirty".