12210110212021 has 4 divisors (see below), whose sum is σ = 12236828177932. Its totient is φ = 12183392246112.

The previous prime is 12210110211979. The next prime is 12210110212031. The reversal of 12210110212021 is 12021201101221.

12210110212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6362955800100 + 5847154411921 = 2522490^2 + 2418089^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210110212021 - 2²⁵ = 12210076657589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210110211986 and 12210110212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210110212031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13358982270 + ... + 13358983183.

It is an arithmetic number, because the mean of its divisors is an integer number (3059207044483).

Almost surely, 2^{12210110212021} is an apocalyptic number.

It is an amenable number.

12210110212021 is a deficient number, since it is larger than the sum of its proper divisors (26717965911).

12210110212021 is an equidigital number, since it uses as much as digits as its factorization.

12210110212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26717965910.

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

Adding to 12210110212021 its reverse (12021201101221), we get a palindrome (24231311313242).

The spelling of 12210110212021 in words is "twelve trillion, two hundred ten billion, one hundred ten million, two hundred twelve thousand, twenty-one".