1011161121 has 8 divisors (see below), whose sum is σ = 1406832960. Its totient is φ = 644798352.

The previous prime is 1011161111. The next prime is 1011161141. The reversal of 1011161121 is 1211611101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1011161121 - 2⁷ = 1011160993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011161121.

It is not an unprimeable number, because it can be changed into a prime (1011161111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7327186 + ... + 7327323.

It is an arithmetic number, because the mean of its divisors is an integer number (175854120).

Almost surely, 2^1011161121 is an apocalyptic number.

It is an amenable number.

1011161121 is a deficient number, since it is larger than the sum of its proper divisors (395671839).

1011161121 is a wasteful number, since it uses less digits than its factorization.

1011161121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654535.

The product of its (nonzero) digits is 12, while the sum is 15.

The square root of 1011161121 is about 31798.7597399647. The cubic root of 1011161121 is about 1003.7066176770.

Adding to 1011161121 its reverse (1211611101), we get a palindrome (2222772222).

The spelling of 1011161121 in words is "one billion, eleven million, one hundred sixty-one thousand, one hundred twenty-one".