12005523211 has 8 divisors (see below), whose sum is σ = 13548553200. Its totient is φ = 10537763040.

The previous prime is 12005523143. The next prime is 12005523247. The reversal of 12005523211 is 11232550021.

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 12005523211 - 2⁷ = 12005523083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12005523251) 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, 18817116 + ... + 18817753.

It is an arithmetic number, because the mean of its divisors is an integer number (1693569150).

Almost surely, 2^12005523211 is an apocalyptic number.

12005523211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12005523211 is a deficient number, since it is larger than the sum of its proper divisors (1543029989).

12005523211 is a wasteful number, since it uses less digits than its factorization.

12005523211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37634909.

The product of its (nonzero) digits is 600, while the sum is 22.

The spelling of 12005523211 in words is "twelve billion, five million, five hundred twenty-three thousand, two hundred eleven".