11223043961 has 2 divisors, whose sum is σ = 11223043962. Its totient is φ = 11223043960.

The previous prime is 11223043919. The next prime is 11223044029. The reversal of 11223043961 is 16934032211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8092081936 + 3130962025 = 89956^2 + 55955^2 .

It is an emirp because it is prime and its reverse (16934032211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11223043961 - 2²⁶ = 11155935097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11223043261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611521980 + 5611521981.

It is an arithmetic number, because the mean of its divisors is an integer number (5611521981).

Almost surely, 2^11223043961 is an apocalyptic number.

It is an amenable number.

11223043961 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223043961 is an equidigital number, since it uses as much as digits as its factorization.

11223043961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 11223043961 in words is "eleven billion, two hundred twenty-three million, forty-three thousand, nine hundred sixty-one".