100303220 has 24 divisors (see below), whose sum is σ = 215776008. Its totient is φ = 39142400.

The previous prime is 100303211. The next prime is 100303237. The reversal of 100303220 is 22303001.

It can be written as a sum of positive squares in 4 ways, for example, as 183184 + 100120036 = 428^2 + 10006^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60341 + ... + 61980.

It is an arithmetic number, because the mean of its divisors is an integer number (8990667).

Almost surely, 2^100303220 is an apocalyptic number.

100303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100303220 is an abundant number, since it is smaller than the sum of its proper divisors (115472788).

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

100303220 is a wasteful number, since it uses less digits than its factorization.

100303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122371 (or 122369 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 100303220 is about 10015.1495245952. The cubic root of 100303220 is about 464.6275508375.

Adding to 100303220 its reverse (22303001), we get a palindrome (122606221).

The spelling of 100303220 in words is "one hundred million, three hundred three thousand, two hundred twenty".