12210202110221 has 8 divisors (see below), whose sum is σ = 12243583660344. Its totient is φ = 12176835148800.

The previous prime is 12210202110209. The next prime is 12210202110331. The reversal of 12210202110221 is 12201120201221.

It can be written as a sum of positive squares in 4 ways, for example, as 6493985788900 + 5716216321321 = 2548330^2 + 2390861^2 .

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 12210202110221 - 2³⁸ = 11935324203277 is a prime.

It is a super-2 number, since 2×12210202110221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12210202110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210202110121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969910 + ... + 5319863.

It is an arithmetic number, because the mean of its divisors is an integer number (1530447957543).

Almost surely, 2^{12210202110221} is an apocalyptic number.

It is an amenable number.

12210202110221 is a deficient number, since it is larger than the sum of its proper divisors (33381550123).

12210202110221 is an equidigital number, since it uses as much as digits as its factorization.

12210202110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294351.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12210202110221 its reverse (12201120201221), we get a palindrome (24411322311442).

The spelling of 12210202110221 in words is "twelve trillion, two hundred ten billion, two hundred two million, one hundred ten thousand, two hundred twenty-one".