12205572 has 12 divisors (see below), whose sum is σ = 28479696. Its totient is φ = 4068520.

The previous prime is 12205561. The next prime is 12205573. The reversal of 12205572 is 27550221.

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 (12205573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508554 + ... + 508577.

It is an arithmetic number, because the mean of its divisors is an integer number (2373308).

Almost surely, 2^12205572 is an apocalyptic number.

12205572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12205572 is an abundant number, since it is smaller than the sum of its proper divisors (16274124).

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

12205572 is a wasteful number, since it uses less digits than its factorization.

12205572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017138 (or 1017136 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 12205572 is about 3493.6473777415. The cubic root of 12205572 is about 230.2427933909.

Adding to 12205572 its reverse (27550221), we get a palindrome (39755793).

The spelling of 12205572 in words is "twelve million, two hundred five thousand, five hundred seventy-two".