1141121181 has 16 divisors (see below), whose sum is σ = 1584033344. Its totient is φ = 730041984.

The previous prime is 1141121161. The next prime is 1141121207. The reversal of 1141121181 is 1811211411.

It is a happy number.

It is not a de Polignac number, because 1141121181 - 2⁷ = 1141121053 is a prime.

It is a super-2 number, since 2×1141121181² = 2604315099453669522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141121161) 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, 62311 + ... + 78516.

It is an arithmetic number, because the mean of its divisors is an integer number (99002084).

Almost surely, 2^1141121181 is an apocalyptic number.

It is an amenable number.

1141121181 is a deficient number, since it is larger than the sum of its proper divisors (442912163).

1141121181 is a wasteful number, since it uses less digits than its factorization.

1141121181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140940.

The product of its digits is 64, while the sum is 21.

The square root of 1141121181 is about 33780.4852096591. The cubic root of 1141121181 is about 1044.9862809643.

Adding to 1141121181 its reverse (1811211411), we get a palindrome (2952332592).

The spelling of 1141121181 in words is "one billion, one hundred forty-one million, one hundred twenty-one thousand, one hundred eighty-one".