120505011 has 16 divisors (see below), whose sum is σ = 184506240. Its totient is φ = 69189120.

The previous prime is 120505009. The next prime is 120505031. The reversal of 120505011 is 110505021.

It is not a de Polignac number, because 120505011 - 2¹ = 120505009 is a prime.

It is a super-2 number, since 2×120505011² = 29042915352220242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120505031) 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, 95470 + ... + 96723.

It is an arithmetic number, because the mean of its divisors is an integer number (11531640).

Almost surely, 2^120505011 is an apocalyptic number.

120505011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120505011 is a deficient number, since it is larger than the sum of its proper divisors (64001229).

120505011 is a wasteful number, since it uses less digits than its factorization.

120505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192226.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 120505011 is about 10977.4774424728. The cubic root of 120505011 is about 493.9333710615.

The spelling of 120505011 in words is "one hundred twenty million, five hundred five thousand, eleven".