12122011201 has 4 divisors (see below), whose sum is σ = 12122941572. Its totient is φ = 12121080832.

The previous prime is 12122011199. The next prime is 12122011219. The reversal of 12122011201 is 10211022121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10211022121 = 4903 ⋅2082607.

It can be written as a sum of positive squares in 2 ways, for example, as 2415820801 + 9706190400 = 49151^2 + 98520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122011201 - 2¹ = 12122011199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122011261) 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, 445360 + ... + 471793.

It is an arithmetic number, because the mean of its divisors is an integer number (3030735393).

Almost surely, 2^12122011201 is an apocalyptic number.

It is an amenable number.

12122011201 is a deficient number, since it is larger than the sum of its proper divisors (930371).

12122011201 is an equidigital number, since it uses as much as digits as its factorization.

12122011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930370.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12122011201 its reverse (10211022121), we get a palindrome (22333033322).

The spelling of 12122011201 in words is "twelve billion, one hundred twenty-two million, eleven thousand, two hundred one".