11208427281 has 24 divisors (see below), whose sum is σ = 16295737536. Its totient is φ = 7423526880.

The previous prime is 11208427273. The next prime is 11208427289. The reversal of 11208427281 is 18272480211.

It is a happy number.

11208427281 is a `hidden beast` number, since 1 + 1 + 208 + 427 + 28 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11208427273) and next prime (11208427289).

It is not a de Polignac number, because 11208427281 - 2³ = 11208427273 is a prime.

It is a super-2 number, since 2×11208427281² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11208427289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3771126 + ... + 3774096.

It is an arithmetic number, because the mean of its divisors is an integer number (678989064).

Almost surely, 2^11208427281 is an apocalyptic number.

It is an amenable number.

11208427281 is a deficient number, since it is larger than the sum of its proper divisors (5087310255).

11208427281 is a wasteful number, since it uses less digits than its factorization.

11208427281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573 (or 5570 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 11208427281 in words is "eleven billion, two hundred eight million, four hundred twenty-seven thousand, two hundred eighty-one".