1151422011 has 24 divisors (see below), whose sum is σ = 1680314064. Its totient is φ = 759732480.

The previous prime is 1151422009. The next prime is 1151422037. The reversal of 1151422011 is 1102241511.

It is not a de Polignac number, because 1151422011 - 2¹ = 1151422009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1151422411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537735 + ... + 539871.

It is an arithmetic number, because the mean of its divisors is an integer number (70013086).

Almost surely, 2^1151422011 is an apocalyptic number.

1151422011 is a deficient number, since it is larger than the sum of its proper divisors (528892053).

1151422011 is a wasteful number, since it uses less digits than its factorization.

1151422011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1151422011 is about 33932.6098465768. The cubic root of 1151422011 is about 1048.1212089451.

Adding to 1151422011 its reverse (1102241511), we get a palindrome (2253663522).

The spelling of 1151422011 in words is "one billion, one hundred fifty-one million, four hundred twenty-two thousand, eleven".