12221020211201 has 4 divisors (see below), whose sum is σ = 12221055303600. Its totient is φ = 12220985118804.

The previous prime is 12221020211171. The next prime is 12221020211203. The reversal of 12221020211201 is 10211202012221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12221020211201 - 2³⁰ = 12219946469377 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 12221020211201.

It is not an unprimeable number, because it can be changed into a prime (12221020211203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17018531 + ... + 17722088.

It is an arithmetic number, because the mean of its divisors is an integer number (3055263825900).

Almost surely, 2^{12221020211201} is an apocalyptic number.

It is an amenable number.

12221020211201 is a deficient number, since it is larger than the sum of its proper divisors (35092399).

12221020211201 is an equidigital number, since it uses as much as digits as its factorization.

12221020211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35092398.

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

Adding to 12221020211201 its reverse (10211202012221), we get a palindrome (22432222223422).

The spelling of 12221020211201 in words is "twelve trillion, two hundred twenty-one billion, twenty million, two hundred eleven thousand, two hundred one".