12122221020201 has 6 divisors (see below), whose sum is σ = 17509874806970. Its totient is φ = 8081480680128.

The previous prime is 12122221020167. The next prime is 12122221020211. The reversal of 12122221020201 is 10202012222121.

It is a happy number.

12122221020201 is a `hidden beast` number, since 1 + 212 + 22 + 210 + 20 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6604180419600 + 5518040600601 = 2569860^2 + 2349051^2 .

It is not a de Polignac number, because 12122221020201 - 2⁶ = 12122221020137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122221020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673456723336 + ... + 673456723353.

Almost surely, 2^{12122221020201} is an apocalyptic number.

It is an amenable number.

12122221020201 is a deficient number, since it is larger than the sum of its proper divisors (5387653786769).

12122221020201 is a wasteful number, since it uses less digits than its factorization.

12122221020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346913446695 (or 1346913446692 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12122221020201 its reverse (10202012222121), we get a palindrome (22324233242322).

The spelling of 12122221020201 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty thousand, two hundred one".