100331223220 has 96 divisors (see below), whose sum is σ = 226494164736. Its totient is φ = 37196544000.

The previous prime is 100331223163. The next prime is 100331223227. The reversal of 100331223220 is 22322133001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100331223227) 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, 27107370 + ... + 27111070.

It is an arithmetic number, because the mean of its divisors is an integer number (2359314216).

Almost surely, 2^100331223220 is an apocalyptic number.

100331223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100331223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113247082368).

100331223220 is an abundant number, since it is smaller than the sum of its proper divisors (126162941516).

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

100331223220 is a wasteful number, since it uses less digits than its factorization.

100331223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921 (or 4919 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 100331223220 its reverse (22322133001), we get a palindrome (122653356221).

The spelling of 100331223220 in words is "one hundred billion, three hundred thirty-one million, two hundred twenty-three thousand, two hundred twenty".