11220123103261 has 2 divisors, whose sum is σ = 11220123103262. Its totient is φ = 11220123103260.

The previous prime is 11220123103193. The next prime is 11220123103313. The reversal of 11220123103261 is 16230132102211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11208641980761 + 11481122500 = 3347931^2 + 107150^2 .

It is an emirp because it is prime and its reverse (16230132102211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11220123103261 - 2¹⁵ = 11220123070493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220123163261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610061551630 + 5610061551631.

It is an arithmetic number, because the mean of its divisors is an integer number (5610061551631).

Almost surely, 2^{11220123103261} is an apocalyptic number.

It is an amenable number.

11220123103261 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220123103261 is an equidigital number, since it uses as much as digits as its factorization.

11220123103261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 11220123103261 its reverse (16230132102211), we get a palindrome (27450255205472).

The spelling of 11220123103261 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-three million, one hundred three thousand, two hundred sixty-one".