221022220011121 has 16 divisors (see below), whose sum is σ = 226311941677248. Its totient is φ = 215804736100800.

The previous prime is 221022220011097. The next prime is 221022220011161. The reversal of 221022220011121 is 121110022220122.

It is a cyclic number.

It is not a de Polignac number, because 221022220011121 - 2⁷ = 221022220010993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221022220011161) 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 15 ways as a sum of consecutive naturals, for example, 25818210 + ... + 33296011.

It is an arithmetic number, because the mean of its divisors is an integer number (14144496354828).

Almost surely, 2^{221022220011121} is an apocalyptic number.

It is an amenable number.

221022220011121 is a deficient number, since it is larger than the sum of its proper divisors (5289721666127).

221022220011121 is a wasteful number, since it uses less digits than its factorization.

221022220011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59114832.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221022220011121 its reverse (121110022220122), we get a palindrome (342132242231243).

The spelling of 221022220011121 in words is "two hundred twenty-one trillion, twenty-two billion, two hundred twenty million, eleven thousand, one hundred twenty-one".