12021121202201 has 4 divisors (see below), whose sum is σ = 12021128194404. Its totient is φ = 12021114210000.

The previous prime is 12021121202197. The next prime is 12021121202203. The reversal of 12021121202201 is 10220212112021.

12021121202201 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7115556250000 + 4905564952201 = 2667500^2 + 2214851^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021121202201 - 2² = 12021121202197 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 12021121202201.

It is not an unprimeable number, because it can be changed into a prime (12021121202203) 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, 1074551 + ... + 5019651.

It is an arithmetic number, because the mean of its divisors is an integer number (3005282048601).

Almost surely, 2^{12021121202201} is an apocalyptic number.

It is an amenable number.

12021121202201 is a deficient number, since it is larger than the sum of its proper divisors (6992203).

12021121202201 is an equidigital number, since it uses as much as digits as its factorization.

12021121202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6992202.

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

Adding to 12021121202201 its reverse (10220212112021), we get a palindrome (22241333314222).

The spelling of 12021121202201 in words is "twelve trillion, twenty-one billion, one hundred twenty-one million, two hundred two thousand, two hundred one".