12205156044 has 12 divisors (see below), whose sum is σ = 28478697464. Its totient is φ = 4068385344.

The previous prime is 12205155953. The next prime is 12205156049. The reversal of 12205156044 is 44065150221.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12205156049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508548157 + ... + 508548180.

Almost surely, 2^12205156044 is an apocalyptic number.

It is an amenable number.

12205156044 is an abundant number, since it is smaller than the sum of its proper divisors (16273541420).

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

12205156044 is a wasteful number, since it uses less digits than its factorization.

12205156044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017096344 (or 1017096342 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 12205156044 in words is "twelve billion, two hundred five million, one hundred fifty-six thousand, forty-four".