11272281242 has 4 divisors (see below), whose sum is σ = 16908421866. Its totient is φ = 5636140620.

The previous prime is 11272281233. The next prime is 11272281253. The reversal of 11272281242 is 24218227211.

It is a Cunningham number, because it is equal to 106171²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11272281241 + 1 = 106171^2 + 1^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11272281199 and 11272281208.

It is an unprimeable number.

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, 2818070309 + ... + 2818070312.

Almost surely, 2^11272281242 is an apocalyptic number.

11272281242 is a deficient number, since it is larger than the sum of its proper divisors (5636140624).

11272281242 is an equidigital number, since it uses as much as digits as its factorization.

11272281242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636140623.

The product of its digits is 7168, while the sum is 32.

The spelling of 11272281242 in words is "eleven billion, two hundred seventy-two million, two hundred eighty-one thousand, two hundred forty-two".