23212107 has 12 divisors (see below), whose sum is σ = 33640464. Its totient is φ = 15423120.

The previous prime is 23212099. The next prime is 23212139. The reversal of 23212107 is 70121232.

It is not a de Polignac number, because 23212107 - 2³ = 23212099 is a prime.

It is a super-2 number, since 2×23212107² = 1077603822758898, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23212107.

It is not an unprimeable number, because it can be changed into a prime (23212177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1348 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (2803372).

Almost surely, 2^23212107 is an apocalyptic number.

23212107 is a deficient number, since it is larger than the sum of its proper divisors (10428357).

23212107 is a wasteful number, since it uses less digits than its factorization.

23212107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610 (or 8607 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 23212107 is about 4817.8944571254. The cubic root of 23212107 is about 285.2582331698.

Adding to 23212107 its reverse (70121232), we get a palindrome (93333339).

The spelling of 23212107 in words is "twenty-three million, two hundred twelve thousand, one hundred seven".