12220110121021 has 16 divisors (see below), whose sum is σ = 13363335360000. Its totient is φ = 11082298106880.

The previous prime is 12220110121019. The next prime is 12220110121073. The reversal of 12220110121021 is 12012101102221.

It is not a de Polignac number, because 12220110121021 - 2¹ = 12220110121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220110120986 and 12220110121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220110121321) 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, 7756180 + ... + 9197746.

It is an arithmetic number, because the mean of its divisors is an integer number (835208460000).

Almost surely, 2^{12220110121021} is an apocalyptic number.

12220110121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220110121021 is a deficient number, since it is larger than the sum of its proper divisors (1143225238979).

12220110121021 is a wasteful number, since it uses less digits than its factorization.

12220110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443444.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12220110121021 its reverse (12012101102221), we get a palindrome (24232211223242).

The spelling of 12220110121021 in words is "twelve trillion, two hundred twenty billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".