12212220021201 has 12 divisors (see below), whose sum is σ = 18116626698612. Its totient is φ = 7921440013536.

The previous prime is 12212220021193. The next prime is 12212220021203. The reversal of 12212220021201 is 10212002221221.

It is a happy number.

12212220021201 is a `hidden beast` number, since 1 + 221 + 2 + 220 + 0 + 21 + 201 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11521958148801 + 690261872400 = 3394401^2 + 830820^2 .

It is not a de Polignac number, because 12212220021201 - 2³ = 12212220021193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212220021203) 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 11 ways as a sum of consecutive naturals, for example, 18336666366 + ... + 18336667031.

It is an arithmetic number, because the mean of its divisors is an integer number (1509718891551).

Almost surely, 2^{12212220021201} is an apocalyptic number.

It is an amenable number.

12212220021201 is a deficient number, since it is larger than the sum of its proper divisors (5904406677411).

12212220021201 is a wasteful number, since it uses less digits than its factorization.

12212220021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36673333440 (or 36673333437 counting only the distinct ones).

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

Adding to 12212220021201 its reverse (10212002221221), we get a palindrome (22424222242422).

The spelling of 12212220021201 in words is "twelve trillion, two hundred twelve billion, two hundred twenty million, twenty-one thousand, two hundred one".