120810811 has 8 divisors (see below), whose sum is σ = 133026624. Its totient is φ = 108800520.

The previous prime is 120810799. The next prime is 120810827. The reversal of 120810811 is 118018021.

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

It is a cyclic number.

It is not a de Polignac number, because 120810811 - 2²¹ = 118713659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120810311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50145 + ... + 52498.

It is an arithmetic number, because the mean of its divisors is an integer number (16628328).

Almost surely, 2^120810811 is an apocalyptic number.

120810811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120810811 is a deficient number, since it is larger than the sum of its proper divisors (12215813).

120810811 is a wasteful number, since it uses less digits than its factorization.

120810811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102761.

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

The square root of 120810811 is about 10991.3971359423. The cubic root of 120810811 is about 494.3508287726.

Adding to 120810811 its reverse (118018021), we get a palindrome (238828832).

The spelling of 120810811 in words is "one hundred twenty million, eight hundred ten thousand, eight hundred eleven".