12212242223 has 4 divisors (see below), whose sum is σ = 12215603640. Its totient is φ = 12208880808.

The previous prime is 12212242187. The next prime is 12212242241. The reversal of 12212242223 is 32224221221.

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

It is a cyclic number.

It is not a de Polignac number, because 12212242223 - 2¹² = 12212238127 is a prime.

It is a super-2 number, since 2×12212242223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212242253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1675253 + ... + 1682526.

It is an arithmetic number, because the mean of its divisors is an integer number (3053900910).

Almost surely, 2^12212242223 is an apocalyptic number.

12212242223 is a deficient number, since it is larger than the sum of its proper divisors (3361417).

12212242223 is an equidigital number, since it uses as much as digits as its factorization.

12212242223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361416.

The product of its digits is 1536, while the sum is 23.

Adding to 12212242223 its reverse (32224221221), we get a palindrome (44436463444).

The spelling of 12212242223 in words is "twelve billion, two hundred twelve million, two hundred forty-two thousand, two hundred twenty-three".