12022561226261 has 2 divisors, whose sum is σ = 12022561226262. Its totient is φ = 12022561226260.

The previous prime is 12022561226239. The next prime is 12022561226321. The reversal of 12022561226261 is 16262216522021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9740603548036 + 2281957678225 = 3120994^2 + 1510615^2 .

It is a cyclic number.

It is not a de Polignac number, because 12022561226261 - 2¹⁰ = 12022561225237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12022561226161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011280613130 + 6011280613131.

It is an arithmetic number, because the mean of its divisors is an integer number (6011280613131).

Almost surely, 2^{12022561226261} is an apocalyptic number.

It is an amenable number.

12022561226261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12022561226261 is an equidigital number, since it uses as much as digits as its factorization.

12022561226261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

Adding to 12022561226261 its reverse (16262216522021), we get a palindrome (28284777748282).

The spelling of 12022561226261 in words is "twelve trillion, twenty-two billion, five hundred sixty-one million, two hundred twenty-six thousand, two hundred sixty-one".