10001103220 has 12 divisors (see below), whose sum is σ = 21002316804. Its totient is φ = 4000441280.

The previous prime is 10001103193. The next prime is 10001103263. The reversal of 10001103220 is 2230110001.

It can be written as a sum of positive squares in 2 ways, for example, as 7798302864 + 2202800356 = 88308^2 + 46934^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10001103197 and 10001103206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250027561 + ... + 250027600.

It is an arithmetic number, because the mean of its divisors is an integer number (1750193067).

Almost surely, 2^10001103220 is an apocalyptic number.

10001103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001103220 is an abundant number, since it is smaller than the sum of its proper divisors (11001213584).

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

10001103220 is a wasteful number, since it uses less digits than its factorization.

10001103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500055170 (or 500055168 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10001103220 its reverse (2230110001), we get a palindrome (12231213221).

The spelling of 10001103220 in words is "ten billion, one million, one hundred three thousand, two hundred twenty".