2212221223 has 4 divisors (see below), whose sum is σ = 2212331800. Its totient is φ = 2212110648.

The previous prime is 2212221173. The next prime is 2212221241. The reversal of 2212221223 is 3221222122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3221222122 = 2 ⋅1610611061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2212221223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212227223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15948 + ... + 68401.

It is an arithmetic number, because the mean of its divisors is an integer number (553082950).

Almost surely, 2^2212221223 is an apocalyptic number.

2212221223 is a deficient number, since it is larger than the sum of its proper divisors (110577).

2212221223 is an equidigital number, since it uses as much as digits as its factorization.

2212221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110576.

The product of its digits is 384, while the sum is 19.

The square root of 2212221223 is about 47034.2558461384. The cubic root of 2212221223 is about 1302.9953068757.

Adding to 2212221223 its reverse (3221222122), we get a palindrome (5433443345).

It can be divided in two parts, 221222122 and 3, that multiplied together give a palindrome (663666366).

The spelling of 2212221223 in words is "two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty-three".