12006365521 has 8 divisors (see below), whose sum is σ = 12068933760. Its totient is φ = 11943900528.

The previous prime is 12006365513. The next prime is 12006365533. The reversal of 12006365521 is 12556360021.

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 12006365521 - 2³ = 12006365513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12006365621) 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, 213090 + ... + 263476.

It is an arithmetic number, because the mean of its divisors is an integer number (1508616720).

Almost surely, 2^12006365521 is an apocalyptic number.

It is an amenable number.

12006365521 is a deficient number, since it is larger than the sum of its proper divisors (62568239).

12006365521 is an equidigital number, since it uses as much as digits as its factorization.

12006365521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51623.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 12006365521 in words is "twelve billion, six million, three hundred sixty-five thousand, five hundred twenty-one".