12213045 has 32 divisors (see below), whose sum is σ = 23385600. Its totient is φ = 6011712.

The previous prime is 12213037. The next prime is 12213049. The reversal of 12213045 is 54031221.

12213045 is nontrivially palindromic in base 8.

It is not a de Polignac number, because 12213045 - 2³ = 12213037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1725 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (730800).

Almost surely, 2^12213045 is an apocalyptic number.

12213045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12213045 is a deficient number, since it is larger than the sum of its proper divisors (11172555).

12213045 is a wasteful number, since it uses less digits than its factorization.

12213045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 6980 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12213045 is about 3494.7167267176. The cubic root of 12213045 is about 230.2897733921.

Adding to 12213045 its reverse (54031221), we get a palindrome (66244266).

The spelling of 12213045 in words is "twelve million, two hundred thirteen thousand, forty-five".