220103331010021 has 4 divisors (see below), whose sum is σ = 220124656796044. Its totient is φ = 220082005224000.

The previous prime is 220103331009977. The next prime is 220103331010033. The reversal of 220103331010021 is 120010133301022.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161719825381921 + 58383505628100 = 12716911^2 + 7640910^2 .

It is a cyclic number.

It is not a de Polignac number, because 220103331010021 - 2³⁷ = 219965892056549 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 (220103331010081) 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, 10662877530 + ... + 10662898171.

It is an arithmetic number, because the mean of its divisors is an integer number (55031164199011).

Almost surely, 2^{220103331010021} is an apocalyptic number.

It is an amenable number.

220103331010021 is a deficient number, since it is larger than the sum of its proper divisors (21325786023).

220103331010021 is a wasteful number, since it uses less digits than its factorization.

220103331010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325786022.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 220103331010021 its reverse (120010133301022), we get a palindrome (340113464311043).

The spelling of 220103331010021 in words is "two hundred twenty trillion, one hundred three billion, three hundred thirty-one million, ten thousand, twenty-one".