11925120281 has 2 divisors, whose sum is σ = 11925120282. Its totient is φ = 11925120280.

The previous prime is 11925120241. The next prime is 11925120287. The reversal of 11925120281 is 18202152911.

11925120281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7942374400 + 3982745881 = 89120^2 + 63109^2 .

It is an emirp because it is prime and its reverse (18202152911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11925120281 is a prime.

It is a super-2 number, since 2×11925120281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11925120287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5962560140 + 5962560141.

It is an arithmetic number, because the mean of its divisors is an integer number (5962560141).

Almost surely, 2^11925120281 is an apocalyptic number.

It is an amenable number.

11925120281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11925120281 is an equidigital number, since it uses as much as digits as its factorization.

11925120281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 32.

The spelling of 11925120281 in words is "eleven billion, nine hundred twenty-five million, one hundred twenty thousand, two hundred eighty-one".