1151122011 has 16 divisors (see below), whose sum is σ = 1739888640. Its totient is φ = 671099040.

The previous prime is 1151122001. The next prime is 1151122051. The reversal of 1151122011 is 1102211511.

It is not a de Polignac number, because 1151122011 - 2⁷ = 1151121883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1151122001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775995 + ... + 777476.

It is an arithmetic number, because the mean of its divisors is an integer number (108743040).

Almost surely, 2^1151122011 is an apocalyptic number.

1151122011 is a deficient number, since it is larger than the sum of its proper divisors (588766629).

1151122011 is a wasteful number, since it uses less digits than its factorization.

1151122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553506.

The product of its (nonzero) digits is 20, while the sum is 15.

The square root of 1151122011 is about 33928.1890321308. The cubic root of 1151122011 is about 1048.0301726230.

Adding to 1151122011 its reverse (1102211511), we get a palindrome (2253333522).

The spelling of 1151122011 in words is "one billion, one hundred fifty-one million, one hundred twenty-two thousand, eleven".