210221101211 has 8 divisors (see below), whose sum is σ = 230160027504. Its totient is φ = 190420161120.

The previous prime is 210221101169. The next prime is 210221101231. The reversal of 210221101211 is 112101122012.

210221101211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 210221101211 - 2¹⁸ = 210220839067 is a prime.

It is a super-2 number, since 2×210221101211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210221101231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34493360 + ... + 34499453.

It is an arithmetic number, because the mean of its divisors is an integer number (28770003438).

Almost surely, 2^210221101211 is an apocalyptic number.

210221101211 is a deficient number, since it is larger than the sum of its proper divisors (19938926293).

210221101211 is a wasteful number, since it uses less digits than its factorization.

210221101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68993101.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210221101211 its reverse (112101122012), we get a palindrome (322322223223).

The spelling of 210221101211 in words is "two hundred ten billion, two hundred twenty-one million, one hundred one thousand, two hundred eleven".