12201210221 has 16 divisors (see below), whose sum is σ = 13023110400. Its totient is φ = 11397672000.

The previous prime is 12201210209. The next prime is 12201210247.

12201210221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12201210221 - 2¹⁰ = 12201209197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201210196 and 12201210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201210521) 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, 1227371 + ... + 1237271.

It is an arithmetic number, because the mean of its divisors is an integer number (813944400).

Almost surely, 2^12201210221 is an apocalyptic number.

It is an amenable number.

12201210221 is a deficient number, since it is larger than the sum of its proper divisors (821900179).

12201210221 is an equidigital number, since it uses as much as digits as its factorization.

12201210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820.

The product of its (nonzero) digits is 32, while the sum is 14.

The spelling of 12201210221 in words is "twelve billion, two hundred one million, two hundred ten thousand, two hundred twenty-one".