12201541 has 4 divisors (see below), whose sum is σ = 13310784. Its totient is φ = 11092300.

The previous prime is 12201509. The next prime is 12201557. The reversal of 12201541 is 14510221.

12201541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12201541 - 2⁵ = 12201509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201041) 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, 554605 + ... + 554626.

It is an arithmetic number, because the mean of its divisors is an integer number (3327696).

Almost surely, 2^12201541 is an apocalyptic number.

12201541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12201541 is a deficient number, since it is larger than the sum of its proper divisors (1109243).

12201541 is a wasteful number, since it uses less digits than its factorization.

12201541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109242.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 12201541 is about 3493.0704258575. The cubic root of 12201541 is about 230.2174440152.

Adding to 12201541 its reverse (14510221), we get a palindrome (26711762).

The spelling of 12201541 in words is "twelve million, two hundred one thousand, five hundred forty-one".