23111222 has 4 divisors (see below), whose sum is σ = 34666836. Its totient is φ = 11555610.

The previous prime is 23111219. The next prime is 23111237. The reversal of 23111222 is 22211132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 23111197 and 23111206.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5777804 + ... + 5777807.

It is an arithmetic number, because the mean of its divisors is an integer number (8666709).

Almost surely, 2^23111222 is an apocalyptic number.

23111222 is a deficient number, since it is larger than the sum of its proper divisors (11555614).

23111222 is a wasteful number, since it uses less digits than its factorization.

23111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11555613.

The product of its digits is 48, while the sum is 14.

The square root of 23111222 is about 4807.4132337464. The cubic root of 23111222 is about 284.8443676801.

Adding to 23111222 its reverse (22211132), we get a palindrome (45322354).

The spelling of 23111222 in words is "twenty-three million, one hundred eleven thousand, two hundred twenty-two".