12022222112521 has 2 divisors, whose sum is σ = 12022222112522. Its totient is φ = 12022222112520.

The previous prime is 12022222112519. The next prime is 12022222112569. The reversal of 12022222112521 is 12521122222021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8855117820025 + 3167104292496 = 2975755^2 + 1779636^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022222112521 - 2¹ = 12022222112519 is a prime.

Together with 12022222112519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12022222112501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011111056260 + 6011111056261.

It is an arithmetic number, because the mean of its divisors is an integer number (6011111056261).

Almost surely, 2^{12022222112521} is an apocalyptic number.

It is an amenable number.

12022222112521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022222112521 is an equidigital number, since it uses as much as digits as its factorization.

12022222112521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 12022222112521 its reverse (12521122222021), we get a palindrome (24543344334542).

The spelling of 12022222112521 in words is "twelve trillion, twenty-two billion, two hundred twenty-two million, one hundred twelve thousand, five hundred twenty-one".