23212245 has 16 divisors (see below), whose sum is σ = 42445440. Its totient is φ = 10611264.

The previous prime is 23212207. The next prime is 23212247. The reversal of 23212245 is 54221232.

It is not a de Polignac number, because 23212245 - 2⁸ = 23211989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110430 + ... + 110639.

It is an arithmetic number, because the mean of its divisors is an integer number (2652840).

Almost surely, 2^23212245 is an apocalyptic number.

It is an amenable number.

23212245 is a deficient number, since it is larger than the sum of its proper divisors (19233195).

23212245 is a wasteful number, since it uses less digits than its factorization.

23212245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221084.

The product of its digits is 960, while the sum is 21.

The square root of 23212245 is about 4817.9087787130. The cubic root of 23212245 is about 285.2587984719.

Adding to 23212245 its reverse (54221232), we get a palindrome (77433477).

The spelling of 23212245 in words is "twenty-three million, two hundred twelve thousand, two hundred forty-five".