221102112122211 has 8 divisors (see below), whose sum is σ = 295523605446160. Its totient is φ = 147041013439872.

The previous prime is 221102112122207. The next prime is 221102112122261. The reversal of 221102112122211 is 112221211201122.

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

It is not a de Polignac number, because 221102112122211 - 2² = 221102112122207 is a prime.

It is a super-2 number, since 2×221102112122211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221102112122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90098658970 + ... + 90098661423.

It is an arithmetic number, because the mean of its divisors is an integer number (36940450680770).

Almost surely, 2^{221102112122211} is an apocalyptic number.

221102112122211 is a deficient number, since it is larger than the sum of its proper divisors (74421493323949).

221102112122211 is a wasteful number, since it uses less digits than its factorization.

221102112122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180197320805.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221102112122211 its reverse (112221211201122), we get a palindrome (333323323323333).

The spelling of 221102112122211 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".