10001220220 has 12 divisors (see below), whose sum is σ = 21002562504. Its totient is φ = 4000488080.

The previous prime is 10001220197. The next prime is 10001220223. The reversal of 10001220220 is 2202210001.

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 = 10001220197 and 10001220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001220223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250030486 + ... + 250030525.

It is an arithmetic number, because the mean of its divisors is an integer number (1750213542).

Almost surely, 2^10001220220 is an apocalyptic number.

10001220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001220220 is an abundant number, since it is smaller than the sum of its proper divisors (11001342284).

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

10001220220 is a wasteful number, since it uses less digits than its factorization.

10001220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500061020 (or 500061018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 10001220220 its reverse (2202210001), we get a palindrome (12203430221).

The spelling of 10001220220 in words is "ten billion, one million, two hundred twenty thousand, two hundred twenty".