221112201112201 has 12 divisors (see below), whose sum is σ = 257662611457680. Its totient is φ = 189192826546920.

The previous prime is 221112201112169. The next prime is 221112201112213. The reversal of 221112201112201 is 102211102211122.

It is a happy number.

It is not a de Polignac number, because 221112201112201 - 2⁵ = 221112201112169 is a prime.

It is a super-2 number, since 2×221112201112201² (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 (221112201112291) 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 11 ways as a sum of consecutive naturals, for example, 3951367731 + ... + 3951423688.

It is an arithmetic number, because the mean of its divisors is an integer number (21471884288140).

Almost surely, 2^{221112201112201} is an apocalyptic number.

It is an amenable number.

221112201112201 is a deficient number, since it is larger than the sum of its proper divisors (36550410345479).

221112201112201 is an equidigital number, since it uses as much as digits as its factorization.

221112201112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7902792004 (or 7902791997 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221112201112201 its reverse (102211102211122), we get a palindrome (323323303323323).

The spelling of 221112201112201 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred twelve thousand, two hundred one".