2210221303021 has 4 divisors (see below), whose sum is σ = 2210233586332. Its totient is φ = 2210209019712.

The previous prime is 2210221303009. The next prime is 2210221303051. The reversal of 2210221303021 is 1203031220122.

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 1780489922500 + 429731380521 = 1334350^2 + 655539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210221303021 - 2¹⁵ = 2210221270253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2210221303021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210221303051) 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, 5867676 + ... + 6232981.

It is an arithmetic number, because the mean of its divisors is an integer number (552558396583).

Almost surely, 2^{2210221303021} is an apocalyptic number.

It is an amenable number.

2210221303021 is a deficient number, since it is larger than the sum of its proper divisors (12283311).

2210221303021 is a wasteful number, since it uses less digits than its factorization.

2210221303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283310.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2210221303021 its reverse (1203031220122), we get a palindrome (3413252523143).

The spelling of 2210221303021 in words is "two trillion, two hundred ten billion, two hundred twenty-one million, three hundred three thousand, twenty-one".