210010020222221 has 8 divisors (see below), whose sum is σ = 217867189105080. Its totient is φ = 202193880942592.

The previous prime is 210010020222209. The next prime is 210010020222229. The reversal of 210010020222221 is 122222020010012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41970780852196 + 168039239370025 = 6478486^2 + 12962995^2 .

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 210010020222221 - 2¹⁸ = 210010019960077 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 210010020222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210010020222229) 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, 10257390380 + ... + 10257410853.

It is an arithmetic number, because the mean of its divisors is an integer number (27233398638135).

Almost surely, 2^{210010020222221} is an apocalyptic number.

It is an amenable number.

210010020222221 is a deficient number, since it is larger than the sum of its proper divisors (7857168882859).

210010020222221 is a wasteful number, since it uses less digits than its factorization.

210010020222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20514801615.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210010020222221 its reverse (122222020010012), we get a palindrome (332232040232233).

The spelling of 210010020222221 in words is "two hundred ten trillion, ten billion, twenty million, two hundred twenty-two thousand, two hundred twenty-one".