210220112210221 has 4 divisors (see below), whose sum is σ = 210226638182652. Its totient is φ = 210213586237792.

The previous prime is 210220112210203. The next prime is 210220112210237. The reversal of 210220112210221 is 122012211022012.

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 183705223364100 + 26514888846121 = 13553790^2 + 5149261^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220112210221 - 2¹¹ = 210220112208173 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 (210220112210291) 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, 3262937896 + ... + 3263002321.

It is an arithmetic number, because the mean of its divisors is an integer number (52556659545663).

Almost surely, 2^{210220112210221} is an apocalyptic number.

It is an amenable number.

210220112210221 is a deficient number, since it is larger than the sum of its proper divisors (6525972431).

210220112210221 is an equidigital number, since it uses as much as digits as its factorization.

210220112210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525972430.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210220112210221 its reverse (122012211022012), we get a palindrome (332232323232233).

The spelling of 210220112210221 in words is "two hundred ten trillion, two hundred twenty billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".