12210020221211 has 4 divisors (see below), whose sum is σ = 12214455392952. Its totient is φ = 12205585049472.

The previous prime is 12210020221163. The next prime is 12210020221283. The reversal of 12210020221211 is 11212202001221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210020221211 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 12210020221211.

It is not an unprimeable number, because it can be changed into a prime (12210020221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217581741 + ... + 2217587246.

It is an arithmetic number, because the mean of its divisors is an integer number (3053613848238).

Almost surely, 2^{12210020221211} is an apocalyptic number.

12210020221211 is a deficient number, since it is larger than the sum of its proper divisors (4435171741).

12210020221211 is an equidigital number, since it uses as much as digits as its factorization.

12210020221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435171740.

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

Adding to 12210020221211 its reverse (11212202001221), we get a palindrome (23422222222432).

The spelling of 12210020221211 in words is "twelve trillion, two hundred ten billion, twenty million, two hundred twenty-one thousand, two hundred eleven".