12122102121211 has 4 divisors (see below), whose sum is σ = 12160342191312. Its totient is φ = 12083862051112.

The previous prime is 12122102121179. The next prime is 12122102121253. The reversal of 12122102121211 is 11212120122121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12122102121211 - 2⁵ = 12122102121179 is a prime.

It is a super-2 number, since 2×12122102121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122102121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19120034575 + ... + 19120035208.

It is an arithmetic number, because the mean of its divisors is an integer number (3040085547828).

Almost surely, 2^{12122102121211} is an apocalyptic number.

12122102121211 is a deficient number, since it is larger than the sum of its proper divisors (38240070101).

12122102121211 is an equidigital number, since it uses as much as digits as its factorization.

12122102121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38240070100.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122102121211 its reverse (11212120122121), we get a palindrome (23334222243332).

The spelling of 12122102121211 in words is "twelve trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty-one thousand, two hundred eleven".