12221121110201 has 4 divisors (see below), whose sum is σ = 12221171538804. Its totient is φ = 12221070681600.

The previous prime is 12221121110147. The next prime is 12221121110243. The reversal of 12221121110201 is 10201112112221.

12221121110201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7955756154025 + 4265364956176 = 2820595^2 + 2065276^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221121110201 - 2¹⁴ = 12221121093817 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 12221121110201.

It is not an unprimeable number, because it can be changed into a prime (12221121110101) 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, 24849020 + ... + 25336061.

It is an arithmetic number, because the mean of its divisors is an integer number (3055292884701).

Almost surely, 2^{12221121110201} is an apocalyptic number.

It is an amenable number.

12221121110201 is a deficient number, since it is larger than the sum of its proper divisors (50428603).

12221121110201 is an equidigital number, since it uses as much as digits as its factorization.

12221121110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50428602.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12221121110201 its reverse (10201112112221), we get a palindrome (22422233222422).

The spelling of 12221121110201 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred ten thousand, two hundred one".