20032103003221 has 4 divisors (see below), whose sum is σ = 20032135401100. Its totient is φ = 20032070605344.

The previous prime is 20032103003191. The next prime is 20032103003251. The reversal of 20032103003221 is 12230030123002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20032103003191) and next prime (20032103003251).

It can be written as a sum of positive squares in 2 ways, for example, as 3027704400900 + 17004398602321 = 1740030^2 + 4123639^2 .

It is a cyclic number.

It is not a de Polignac number, because 20032103003221 - 2⁷ = 20032103003093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032103003251) 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, 15253056 + ... + 16514233.

It is an arithmetic number, because the mean of its divisors is an integer number (5008033850275).

Almost surely, 2^{20032103003221} is an apocalyptic number.

It is an amenable number.

20032103003221 is a deficient number, since it is larger than the sum of its proper divisors (32397879).

20032103003221 is an equidigital number, since it uses as much as digits as its factorization.

20032103003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32397878.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20032103003221 its reverse (12230030123002), we get a palindrome (32262133126223).

The spelling of 20032103003221 in words is "twenty trillion, thirty-two billion, one hundred three million, three thousand, two hundred twenty-one".