220030100 has 18 divisors (see below), whose sum is σ = 477465534. Its totient is φ = 88012000.

The previous prime is 220030091. The next prime is 220030117. The reversal of 220030100 is 1030022.

It can be written as a sum of positive squares in 3 ways, for example, as 456976 + 219573124 = 676^2 + 14818^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100051 + ... + 1100250.

It is an arithmetic number, because the mean of its divisors is an integer number (26525863).

Almost surely, 2^220030100 is an apocalyptic number.

220030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220030100 is an abundant number, since it is smaller than the sum of its proper divisors (257435434).

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

220030100 is a wasteful number, since it uses less digits than its factorization.

220030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200315 (or 2200308 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 220030100 is about 14833.4116102804. The cubic root of 220030100 is about 603.7086039399.

Adding to 220030100 its reverse (1030022), we get a palindrome (221060122).

The spelling of 220030100 in words is "two hundred twenty million, thirty thousand, one hundred".