221201100100211 has 80 divisors (see below), whose sum is σ = 293191437388800. Its totient is φ = 163027136764800.

The previous prime is 221201100100199. The next prime is 221201100100297. The reversal of 221201100100211 is 112001001102122.

It is not a de Polignac number, because 221201100100211 - 2²⁶ = 221201032991347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221201100120211) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1201363046 + ... + 1201547156.

It is an arithmetic number, because the mean of its divisors is an integer number (3664892967360).

Almost surely, 2^{221201100100211} is an apocalyptic number.

221201100100211 is a deficient number, since it is larger than the sum of its proper divisors (71990337288589).

221201100100211 is an equidigital number, since it uses as much as digits as its factorization.

221201100100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184798 (or 184765 counting only the distinct ones).

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

Adding to 221201100100211 its reverse (112001001102122), we get a palindrome (333202101202333).

The spelling of 221201100100211 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred million, one hundred thousand, two hundred eleven".