12210202101221 has 32 divisors (see below), whose sum is σ = 13057325039616. Its totient is φ = 11392860600000.

The previous prime is 12210202101199. The next prime is 12210202101239. The reversal of 12210202101221 is 12210120201221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210202101221 is a prime.

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 12210202101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210202107221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128547296 + ... + 128642246.

It is an arithmetic number, because the mean of its divisors is an integer number (408041407488).

Almost surely, 2^{12210202101221} is an apocalyptic number.

It is an amenable number.

12210202101221 is a deficient number, since it is larger than the sum of its proper divisors (847122938395).

12210202101221 is a wasteful number, since it uses less digits than its factorization.

12210202101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95793.

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

Adding to 12210202101221 its reverse (12210120201221), we get a palindrome (24420322302442).

The spelling of 12210202101221 in words is "twelve trillion, two hundred ten billion, two hundred two million, one hundred one thousand, two hundred twenty-one".