221011000110121 has 8 divisors (see below), whose sum is σ = 238012304257280. Its totient is φ = 204009761389392.

The previous prime is 221011000110119. The next prime is 221011000110181. The reversal of 221011000110121 is 121011000110122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221011000110121 - 2¹ = 221011000110119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221011000110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9225591 + ... + 22959388.

It is an arithmetic number, because the mean of its divisors is an integer number (29751538032160).

Almost surely, 2^{221011000110121} is an apocalyptic number.

It is an amenable number.

221011000110121 is a deficient number, since it is larger than the sum of its proper divisors (17001304147159).

221011000110121 is a wasteful number, since it uses less digits than its factorization.

221011000110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32713215.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 221011000110121 its reverse (121011000110122), we get a palindrome (342022000220243).

Subtracting from 221011000110121 its reverse (121011000110122), we obtain a palindrome (99999999999999).

The spelling of 221011000110121 in words is "two hundred twenty-one trillion, eleven billion, one hundred ten thousand, one hundred twenty-one".