10203003220 has 96 divisors (see below), whose sum is σ = 22909612320. Its totient is φ = 3803627520.

The previous prime is 10203003199. The next prime is 10203003221. The reversal of 10203003220 is 2230030201.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 1564044304 + 8638958916 = 39548^2 + 92946^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10203003220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203003221) 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, 25700062 + ... + 25700458.

It is an arithmetic number, because the mean of its divisors is an integer number (238641795).

Almost surely, 2^10203003220 is an apocalyptic number.

10203003220 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 10203003220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11454806160).

10203003220 is an abundant number, since it is smaller than the sum of its proper divisors (12706609100).

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

10203003220 is a wasteful number, since it uses less digits than its factorization.

10203003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 971 counting only the distinct ones).

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

Adding to 10203003220 its reverse (2230030201), we get a palindrome (12433033421).

The spelling of 10203003220 in words is "ten billion, two hundred three million, three thousand, two hundred twenty".