20003103221 has 8 divisors (see below), whose sum is σ = 20476452480. Its totient is φ = 19530124992.

The previous prime is 20003103179. The next prime is 20003103259. The reversal of 20003103221 is 12230130002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20003103221 - 2¹⁸ = 20002841077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003103196 and 20003103205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003102221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17885 + ... + 200813.

It is an arithmetic number, because the mean of its divisors is an integer number (2559556560).

Almost surely, 2^20003103221 is an apocalyptic number.

It is an amenable number.

20003103221 is a deficient number, since it is larger than the sum of its proper divisors (473349259).

20003103221 is a wasteful number, since it uses less digits than its factorization.

20003103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185515.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20003103221 its reverse (12230130002), we get a palindrome (32233233223).

The spelling of 20003103221 in words is "twenty billion, three million, one hundred three thousand, two hundred twenty-one".