12015356366021 has 8 divisors (see below), whose sum is σ = 12648319900800. Its totient is φ = 11382450467040.

The previous prime is 12015356365997. The next prime is 12015356366093. The reversal of 12015356366021 is 12066365351021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12015356366021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015356366021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12015356365021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13980701 + ... + 14815218.

It is an arithmetic number, because the mean of its divisors is an integer number (1581039987600).

Almost surely, 2^{12015356366021} is an apocalyptic number.

It is an amenable number.

12015356366021 is a deficient number, since it is larger than the sum of its proper divisors (632963534779).

12015356366021 is a wasteful number, since it uses less digits than its factorization.

12015356366021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28817899.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 12015356366021 in words is "twelve trillion, fifteen billion, three hundred fifty-six million, three hundred sixty-six thousand, twenty-one".