12205664311236 has 96 divisors (see below), whose sum is σ = 31298593632768. Its totient is φ = 3671354184960.

The previous prime is 12205664311201. The next prime is 12205664311241. The reversal of 12205664311236 is 63211346650221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258993571 + ... + 259040693.

It is an arithmetic number, because the mean of its divisors is an integer number (326027017008).

Almost surely, 2^{12205664311236} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12205664311236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15649296816384).

12205664311236 is an abundant number, since it is smaller than the sum of its proper divisors (19092929321532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12205664311236 is a wasteful number, since it uses less digits than its factorization.

12205664311236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61601 (or 61599 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 12205664311236 in words is "twelve trillion, two hundred five billion, six hundred sixty-four million, three hundred eleven thousand, two hundred thirty-six".