221103230100 has 36 divisors (see below), whose sum is σ = 639725346624. Its totient is φ = 58960861280.

The previous prime is 221103230093. The next prime is 221103230123. The reversal of 221103230100 is 1032301122.

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 221103230100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368505084 + ... + 368505683.

Almost surely, 2^221103230100 is an apocalyptic number.

221103230100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221103230100 is an abundant number, since it is smaller than the sum of its proper divisors (418622116524).

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

221103230100 is a wasteful number, since it uses less digits than its factorization.

221103230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737010784 (or 737010777 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 221103230100 its reverse (1032301122), we get a palindrome (222135531222).

The spelling of 221103230100 in words is "two hundred twenty-one billion, one hundred three million, two hundred thirty thousand, one hundred".