23011212 has 24 divisors (see below), whose sum is σ = 61363456. Its totient is φ = 6574608.

The previous prime is 23011211. The next prime is 23011229. The reversal of 23011212 is 21211032.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (23011211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136888 + ... + 137055.

Almost surely, 2^23011212 is an apocalyptic number.

It is an amenable number.

23011212 is an abundant number, since it is smaller than the sum of its proper divisors (38352244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23011212 is a wasteful number, since it uses less digits than its factorization.

23011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273957 (or 273955 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 23011212 is about 4797.0003126954. Note that the first 3 decimals coincide. The cubic root of 23011212 is about 284.4329012559.

Adding to 23011212 its reverse (21211032), we get a palindrome (44222244).

The spelling of 23011212 in words is "twenty-three million, eleven thousand, two hundred twelve".