23212222 has 16 divisors (see below), whose sum is σ = 38102400. Its totient is φ = 10518040.

The previous prime is 23212207. The next prime is 23212247. The reversal of 23212222 is 22221232.

It is a junction number, because it is equal to n+sod(n) for n = 23212196 and 23212205.

It is a congruent 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, 6429 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^23212222 is an apocalyptic number.

23212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23212222 is a deficient number, since it is larger than the sum of its proper divisors (14890178).

23212222 is a wasteful number, since it uses less digits than its factorization.

23212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311.

The product of its digits is 192, while the sum is 16.

The square root of 23212222 is about 4817.9063917847. The cubic root of 23212222 is about 285.2587042550.

Adding to 23212222 its reverse (22221232), we get a palindrome (45433454).

The spelling of 23212222 in words is "twenty-three million, two hundred twelve thousand, two hundred twenty-two".