12229845 has 32 divisors (see below), whose sum is σ = 20393472. Its totient is φ = 6253632.

The previous prime is 12229843. The next prime is 12229873. The reversal of 12229845 is 54892221.

It is not a de Polignac number, because 12229845 - 2¹ = 12229843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12229843) 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, 43074 + ... + 43356.

It is an arithmetic number, because the mean of its divisors is an integer number (637296).

Almost surely, 2^12229845 is an apocalyptic number.

12229845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12229845 is a deficient number, since it is larger than the sum of its proper divisors (8163627).

12229845 is a wasteful number, since it uses less digits than its factorization.

12229845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its digits is 11520, while the sum is 33.

The square root of 12229845 is about 3497.1195289838. The cubic root of 12229845 is about 230.3953188852.

The spelling of 12229845 in words is "twelve million, two hundred twenty-nine thousand, eight hundred forty-five".