210221110012211 has 4 divisors (see below), whose sum is σ = 210413444057232. Its totient is φ = 210028775967192.

The previous prime is 210221110012183. The next prime is 210221110012213. The reversal of 210221110012211 is 112210011122012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210221110012211 - 2⁴⁶ = 139852365834547 is a prime.

It is a super-2 number, since 2×210221110012211² (a number of 29 digits) contains 22 as substring.

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 210221110012211.

It is not an unprimeable number, because it can be changed into a prime (210221110012213) 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, 96167020871 + ... + 96167023056.

It is an arithmetic number, because the mean of its divisors is an integer number (52603361014308).

Almost surely, 2^{210221110012211} is an apocalyptic number.

210221110012211 is a deficient number, since it is larger than the sum of its proper divisors (192334045021).

210221110012211 is a wasteful number, since it uses less digits than its factorization.

210221110012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192334045020.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210221110012211 its reverse (112210011122012), we get a palindrome (322431121134223).

The spelling of 210221110012211 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred ten million, twelve thousand, two hundred eleven".