12005101515 has 48 divisors (see below), whose sum is σ = 21155145984. Its totient is φ = 5809066560.

The previous prime is 12005101483. The next prime is 12005101529. The reversal of 12005101515 is 51510150021.

It is not a de Polignac number, because 12005101515 - 2⁵ = 12005101483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12005101491 and 12005101500.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 942922 + ... + 955568.

It is an arithmetic number, because the mean of its divisors is an integer number (440732208).

Almost surely, 2^12005101515 is an apocalyptic number.

12005101515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12005101515 is a deficient number, since it is larger than the sum of its proper divisors (9150044469).

12005101515 is a wasteful number, since it uses less digits than its factorization.

12005101515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200 (or 13189 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

Adding to 12005101515 its reverse (51510150021), we get a palindrome (63515251536).

It can be divided in two parts, 1200510 and 1515, that added together give a triangular number (1202025 = T₁₅₅₀).

The spelling of 12005101515 in words is "twelve billion, five million, one hundred one thousand, five hundred fifteen".