12120611515 has 8 divisors (see below), whose sum is σ = 14937834960. Its totient is φ = 9434421792.

The previous prime is 12120611473. The next prime is 12120611521. The reversal of 12120611515 is 51511602121.

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 12120611515 - 2¹³ = 12120603323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120611515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32758225 + ... + 32758594.

It is an arithmetic number, because the mean of its divisors is an integer number (1867229370).

Almost surely, 2^12120611515 is an apocalyptic number.

12120611515 is a deficient number, since it is larger than the sum of its proper divisors (2817223445).

12120611515 is an equidigital number, since it uses as much as digits as its factorization.

12120611515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65516861.

The product of its (nonzero) digits is 600, while the sum is 25.

The spelling of 12120611515 in words is "twelve billion, one hundred twenty million, six hundred eleven thousand, five hundred fifteen".