20112201110121 has 16 divisors (see below), whose sum is σ = 28088589044736. Its totient is φ = 12776406799376.

The previous prime is 20112201110093. The next prime is 20112201110143. The reversal of 20112201110121 is 12101110221102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20112201110121 - 2²⁶ = 20112134001257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112201110121.

It is not an unprimeable number, because it can be changed into a prime (20112201117121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554128575 + ... + 554164868.

It is an arithmetic number, because the mean of its divisors is an integer number (1755536815296).

Almost surely, 2^{20112201110121} is an apocalyptic number.

It is an amenable number.

20112201110121 is a deficient number, since it is larger than the sum of its proper divisors (7976387934615).

20112201110121 is a wasteful number, since it uses less digits than its factorization.

20112201110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108293732.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20112201110121 its reverse (12101110221102), we get a palindrome (32213311331223).

The spelling of 20112201110121 in words is "twenty trillion, one hundred twelve billion, two hundred one million, one hundred ten thousand, one hundred twenty-one".