12201546 has 64 divisors (see below), whose sum is σ = 30855168. Its totient is φ = 3134208.

The previous prime is 12201509. The next prime is 12201557. The reversal of 12201546 is 64510221.

12201546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 16051 + ... + 16793.

It is an arithmetic number, because the mean of its divisors is an integer number (482112).

Almost surely, 2^12201546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15427584).

12201546 is an abundant number, since it is smaller than the sum of its proper divisors (18653622).

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

12201546 is a wasteful number, since it uses less digits than its factorization.

12201546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12201546 is about 3493.0711415601. The cubic root of 12201546 is about 230.2174754617.

Adding to 12201546 its reverse (64510221), we get a palindrome (76711767).

The spelling of 12201546 in words is "twelve million, two hundred one thousand, five hundred forty-six".