12102222002221 has 8 divisors (see below), whose sum is σ = 13033405264824. Its totient is φ = 11171073469440.

The previous prime is 12102222002209. The next prime is 12102222002243. The reversal of 12102222002221 is 12220022220121.

It can be written as a sum of positive squares in 4 ways, for example, as 74774902500 + 12027447099721 = 273450^2 + 3468061^2 .

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 12102222002221 - 2¹¹ = 12102222000173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102222002261) 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, 7956460 + ... + 9354661.

It is an arithmetic number, because the mean of its divisors is an integer number (1629175658103).

Almost surely, 2^{12102222002221} is an apocalyptic number.

It is an amenable number.

12102222002221 is a deficient number, since it is larger than the sum of its proper divisors (931183262603).

12102222002221 is a wasteful number, since it uses less digits than its factorization.

12102222002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364911.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12102222002221 its reverse (12220022220121), we get a palindrome (24322244222342).

The spelling of 12102222002221 in words is "twelve trillion, one hundred two billion, two hundred twenty-two million, two thousand, two hundred twenty-one".