221001112210211 has 4 divisors (see below), whose sum is σ = 221004032375112. Its totient is φ = 220998192045312.

The previous prime is 221001112210171. The next prime is 221001112210259. The reversal of 221001112210211 is 112012211100122.

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 221001112210211 - 2³⁰ = 221000038468387 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 221001112210211.

It is not an unprimeable number, because it can be changed into a prime (221001112210111) 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, 1459968926 + ... + 1460120291.

It is an arithmetic number, because the mean of its divisors is an integer number (55251008093778).

Almost surely, 2^{221001112210211} is an apocalyptic number.

221001112210211 is a deficient number, since it is larger than the sum of its proper divisors (2920164901).

221001112210211 is an equidigital number, since it uses as much as digits as its factorization.

221001112210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920164900.

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

Adding to 221001112210211 its reverse (112012211100122), we get a palindrome (333013323310333).

The spelling of 221001112210211 in words is "two hundred twenty-one trillion, one billion, one hundred twelve million, two hundred ten thousand, two hundred eleven".