12221210021211 has 16 divisors (see below), whose sum is σ = 18353516828320. Its totient is φ = 8035864122240.

The previous prime is 12221210021203. The next prime is 12221210021219. The reversal of 12221210021211 is 11212001212221.

12221210021211 is a `hidden beast` number, since 1 + 2 + 221 + 210 + 0 + 21 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (12221210021203) and next prime (12221210021219).

It is not a de Polignac number, because 12221210021211 - 2³ = 12221210021203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221210021219) 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, 3100254250 + ... + 3100258191.

It is an arithmetic number, because the mean of its divisors is an integer number (1147094801770).

Almost surely, 2^{12221210021211} is an apocalyptic number.

12221210021211 is a deficient number, since it is larger than the sum of its proper divisors (6132306807109).

12221210021211 is an equidigital number, since it uses as much as digits as its factorization.

12221210021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200512523 (or 6200512517 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12221210021211 its reverse (11212001212221), we get a palindrome (23433211233432).

The spelling of 12221210021211 in words is "twelve trillion, two hundred twenty-one billion, two hundred ten million, twenty-one thousand, two hundred eleven".