1121443011 has 24 divisors (see below), whose sum is σ = 1800745856. Its totient is φ = 667854720.

The previous prime is 1121443003. The next prime is 1121443013. The reversal of 1121443011 is 1103441211.

1121443011 is a `hidden beast` number, since 11 + 214 + 430 + 11 = 666.

It is not a de Polignac number, because 1121443011 - 2³ = 1121443003 is a prime.

It is a super-2 number, since 2×1121443011² = 2515268853841492242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121443013) 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 in 23 ways as a sum of consecutive naturals, for example, 150970 + ... + 158223.

Almost surely, 2^1121443011 is an apocalyptic number.

1121443011 is a deficient number, since it is larger than the sum of its proper divisors (679302845).

1121443011 is a wasteful number, since it uses less digits than its factorization.

1121443011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309243 (or 309240 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1121443011 is about 33487.9532220170. The cubic root of 1121443011 is about 1038.9446305180.

Adding to 1121443011 its reverse (1103441211), we get a palindrome (2224884222).

The spelling of 1121443011 in words is "one billion, one hundred twenty-one million, four hundred forty-three thousand, eleven".