23212105 has 8 divisors (see below), whose sum is σ = 31833792. Its totient is φ = 15916848.

The previous prime is 23212099. The next prime is 23212139. The reversal of 23212105 is 50121232.

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

It is a cyclic number.

It is not a de Polignac number, because 23212105 - 2³ = 23212097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331567 + ... + 331636.

It is an arithmetic number, because the mean of its divisors is an integer number (3979224).

Almost surely, 2^23212105 is an apocalyptic number.

It is an amenable number.

23212105 is a deficient number, since it is larger than the sum of its proper divisors (8621687).

23212105 is an equidigital number, since it uses as much as digits as its factorization.

23212105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663215.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 23212105 is about 4817.8942495659. The cubic root of 23212105 is about 285.2582249770.

Adding to 23212105 its reverse (50121232), we get a palindrome (73333337).

The spelling of 23212105 in words is "twenty-three million, two hundred twelve thousand, one hundred five".