11621224060261 has 2 divisors, whose sum is σ = 11621224060262. Its totient is φ = 11621224060260.

The previous prime is 11621224060223. The next prime is 11621224060279. The reversal of 11621224060261 is 16206042212611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8163506124225 + 3457717936036 = 2857185^2 + 1859494^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621224060261 - 2³³ = 11612634125669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11621224060561) 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 as a sum of consecutive naturals, namely, 5810612030130 + 5810612030131.

It is an arithmetic number, because the mean of its divisors is an integer number (5810612030131).

Almost surely, 2^{11621224060261} is an apocalyptic number.

It is an amenable number.

11621224060261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621224060261 is an equidigital number, since it uses as much as digits as its factorization.

11621224060261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

Adding to 11621224060261 its reverse (16206042212611), we get a palindrome (27827266272872).

The spelling of 11621224060261 in words is "eleven trillion, six hundred twenty-one billion, two hundred twenty-four million, sixty thousand, two hundred sixty-one".