120012511 has 8 divisors (see below), whose sum is σ = 123955920. Its totient is φ = 116131392.

The previous prime is 120012491. The next prime is 120012517. The reversal of 120012511 is 115210021.

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 120012511 - 2²³ = 111623903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120012491 and 120012500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012517) 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 7 ways as a sum of consecutive naturals, for example, 11641 + ... + 19378.

It is an arithmetic number, because the mean of its divisors is an integer number (15494490).

Almost surely, 2^120012511 is an apocalyptic number.

120012511 is a deficient number, since it is larger than the sum of its proper divisors (3943409).

120012511 is an equidigital number, since it uses as much as digits as its factorization.

120012511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31145.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 120012511 is about 10955.0221816298. The cubic root of 120012511 is about 493.2595558144.

Adding to 120012511 its reverse (115210021), we get a palindrome (235222532).

The spelling of 120012511 in words is "one hundred twenty million, twelve thousand, five hundred eleven".