100221210198 has 32 divisors (see below), whose sum is σ = 223879864320. Its totient is φ = 33232160520.

The previous prime is 100221210197. The next prime is 100221210227. The reversal of 100221210198 is 891012122001.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221210197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4848190 + ... + 4868817.

It is an arithmetic number, because the mean of its divisors is an integer number (6996245760).

Almost surely, 2^100221210198 is an apocalyptic number.

100221210198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100221210198 is an abundant number, since it is smaller than the sum of its proper divisors (123658654122).

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

100221210198 is a wasteful number, since it uses less digits than its factorization.

100221210198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9717209 (or 9717203 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 100221210198 its reverse (891012122001), we get a palindrome (991233332199).

The spelling of 100221210198 in words is "one hundred billion, two hundred twenty-one million, two hundred ten thousand, one hundred ninety-eight".