120811081 has 4 divisors (see below), whose sum is σ = 120834000. Its totient is φ = 120788164.

The previous prime is 120811007. The next prime is 120811087. The reversal of 120811081 is 180118021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120811081 - 2⁷ = 120810953 is a prime.

It is a super-3 number, since 3×120811081³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120811087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870 + ... + 15568.

It is an arithmetic number, because the mean of its divisors is an integer number (30208500).

Almost surely, 2^120811081 is an apocalyptic number.

It is an amenable number.

120811081 is a deficient number, since it is larger than the sum of its proper divisors (22919).

120811081 is an equidigital number, since it uses as much as digits as its factorization.

120811081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22918.

The product of its (nonzero) digits is 128, while the sum is 22.

The square root of 120811081 is about 10991.4094182684. The cubic root of 120811081 is about 494.3511970471.

The spelling of 120811081 in words is "one hundred twenty million, eight hundred eleven thousand, eighty-one".