12201045 has 16 divisors (see below), whose sum is σ = 19611072. Its totient is φ = 6477440.

The previous prime is 12201043. The next prime is 12201061. The reversal of 12201045 is 54010221.

12201045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12201045 - 2¹ = 12201043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 1750 + ... + 5240.

It is an arithmetic number, because the mean of its divisors is an integer number (1225692).

Almost surely, 2^12201045 is an apocalyptic number.

12201045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12201045 is a deficient number, since it is larger than the sum of its proper divisors (7410027).

12201045 is a wasteful number, since it uses less digits than its factorization.

12201045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12201045 is about 3492.9994274262. Note that the first 3 decimals coincide. The cubic root of 12201045 is about 230.2143244803.

Adding to 12201045 its reverse (54010221), we get a palindrome (66211266).

The spelling of 12201045 in words is "twelve million, two hundred one thousand, forty-five".