100203247172 has 36 divisors (see below), whose sum is σ = 210565361664. Its totient is φ = 41558947920.

The previous prime is 100203247171. The next prime is 100203247187. The reversal of 100203247172 is 271742302001.

It is not an unprimeable number, because it can be changed into a prime (100203247171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8239748 + ... + 8251899.

It is an arithmetic number, because the mean of its divisors is an integer number (5849037824).

Almost surely, 2^100203247172 is an apocalyptic number.

It is an amenable number.

100203247172 is an abundant number, since it is smaller than the sum of its proper divisors (110362114492).

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

100203247172 is a wasteful number, since it uses less digits than its factorization.

100203247172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491696 (or 16491687 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 100203247172 its reverse (271742302001), we get a palindrome (371945549173).

The spelling of 100203247172 in words is "one hundred billion, two hundred three million, two hundred forty-seven thousand, one hundred seventy-two".