210211202220221 has 8 divisors (see below), whose sum is σ = 214935461900544. Its totient is φ = 205497429244560.

The previous prime is 210211202220163. The next prime is 210211202220277. The reversal of 210211202220221 is 122022202112012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210211202220221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210211202220193 and 210211202220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211202220281) 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, 2621635625 + ... + 2621715806.

It is an arithmetic number, because the mean of its divisors is an integer number (26866932737568).

Almost surely, 2^{210211202220221} is an apocalyptic number.

It is an amenable number.

210211202220221 is a deficient number, since it is larger than the sum of its proper divisors (4724259680323).

210211202220221 is an equidigital number, since it uses as much as digits as its factorization.

210211202220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243352331.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210211202220221 its reverse (122022202112012), we get a palindrome (332233404332233).

The spelling of 210211202220221 in words is "two hundred ten trillion, two hundred eleven billion, two hundred two million, two hundred twenty thousand, two hundred twenty-one".