12205100012 has 24 divisors (see below), whose sum is σ = 24413512704. Its totient is φ = 5230047312.

The previous prime is 12205099997. The next prime is 12205100021. The reversal of 12205100012 is 21000150221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 12205100012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216293 + ... + 266819.

It is an arithmetic number, because the mean of its divisors is an integer number (1017229696).

Almost surely, 2^12205100012 is an apocalyptic number.

It is an amenable number.

12205100012 is an abundant number, since it is smaller than the sum of its proper divisors (12208412692).

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

12205100012 is a wasteful number, since it uses less digits than its factorization.

12205100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59165 (or 59163 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 12205100012 its reverse (21000150221), we get a palindrome (33205250233).

The spelling of 12205100012 in words is "twelve billion, two hundred five million, one hundred thousand, twelve".