12210045 has 8 divisors (see below), whose sum is σ = 19536096. Its totient is φ = 6512016.

The previous prime is 12210041. The next prime is 12210059. The reversal of 12210045 is 54001221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12210045 - 2² = 12210041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 814003 = 12210045 / (1 + 2 + 2 + 1 + 0 + 0 + 4 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406987 + ... + 407016.

It is an arithmetic number, because the mean of its divisors is an integer number (2442012).

Almost surely, 2^12210045 is an apocalyptic number.

12210045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12210045 is a deficient number, since it is larger than the sum of its proper divisors (7326051).

12210045 is an equidigital number, since it uses as much as digits as its factorization.

12210045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814011.

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

The square root of 12210045 is about 3494.2874810181. The cubic root of 12210045 is about 230.2709157991.

Adding to 12210045 its reverse (54001221), we get a palindrome (66211266).

The spelling of 12210045 in words is "twelve million, two hundred ten thousand, forty-five".