120500011511 has 32 divisors (see below), whose sum is σ = 142037280000. Its totient is φ = 101042208000.

The previous prime is 120500011501. The next prime is 120500011517. The reversal of 120500011511 is 115110005021.

It is a cyclic number.

It is not a de Polignac number, because 120500011511 - 2⁶ = 120500011447 is a prime.

It is a super-2 number, since 2×120500011511² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120500011511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120500011517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4261841 + ... + 4290021.

It is an arithmetic number, because the mean of its divisors is an integer number (4438665000).

Almost surely, 2^120500011511 is an apocalyptic number.

120500011511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120500011511 is a deficient number, since it is larger than the sum of its proper divisors (21537268489).

120500011511 is a wasteful number, since it uses less digits than its factorization.

120500011511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28751.

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 120500011511 its reverse (115110005021), we get a palindrome (235610016532).

The spelling of 120500011511 in words is "one hundred twenty billion, five hundred million, eleven thousand, five hundred eleven".