20103003220 has 12 divisors (see below), whose sum is σ = 42216306804. Its totient is φ = 8041201280.

The previous prime is 20103003209. The next prime is 20103003227. The reversal of 20103003220 is 2230030102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5775392016 + 14327611204 = 75996^2 + 119698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20103003220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103003227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502575061 + ... + 502575100.

It is an arithmetic number, because the mean of its divisors is an integer number (3518025567).

Almost surely, 2^20103003220 is an apocalyptic number.

20103003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103003220 is an abundant number, since it is smaller than the sum of its proper divisors (22113303584).

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

20103003220 is a wasteful number, since it uses less digits than its factorization.

20103003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005150170 (or 1005150168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20103003220 its reverse (2230030102), we get a palindrome (22333033322).

The spelling of 20103003220 in words is "twenty billion, one hundred three million, three thousand, two hundred twenty".