1128061011 has 32 divisors (see below), whose sum is σ = 1918844928. Its totient is φ = 572372640.

The previous prime is 1128061009. The next prime is 1128061019. The reversal of 1128061011 is 1101608211.

It is a happy number.

It is not a de Polignac number, because 1128061011 - 2¹ = 1128061009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1128061019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46851 + ... + 66716.

It is an arithmetic number, because the mean of its divisors is an integer number (59963904).

Almost surely, 2^1128061011 is an apocalyptic number.

1128061011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1128061011 is a deficient number, since it is larger than the sum of its proper divisors (790783917).

1128061011 is a wasteful number, since it uses less digits than its factorization.

1128061011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113631.

The product of its (nonzero) digits is 96, while the sum is 21.

The square root of 1128061011 is about 33586.6195232566. The cubic root of 1128061011 is about 1040.9843401746.

Adding to 1128061011 its reverse (1101608211), we get a palindrome (2229669222).

The spelling of 1128061011 in words is "one billion, one hundred twenty-eight million, sixty-one thousand, eleven".