2212021223 has 4 divisors (see below), whose sum is σ = 2248283928. Its totient is φ = 2175758520.

The previous prime is 2212021187. The next prime is 2212021261. The reversal of 2212021223 is 3221202122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221202122 = 2 ⋅1610601061.

It is a cyclic number.

It is not a de Polignac number, because 2212021223 - 2¹⁰ = 2212020199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212021723) 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, 18131261 + ... + 18131382.

It is an arithmetic number, because the mean of its divisors is an integer number (562070982).

Almost surely, 2^2212021223 is an apocalyptic number.

2212021223 is a deficient number, since it is larger than the sum of its proper divisors (36262705).

2212021223 is an equidigital number, since it uses as much as digits as its factorization.

2212021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36262704.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2212021223 is about 47032.1296881185. The cubic root of 2212021223 is about 1302.9560391158.

Adding to 2212021223 its reverse (3221202122), we get a palindrome (5433223345).

It can be divided in two parts, 221202122 and 3, that multiplied together give a palindrome (663606366).

The spelling of 2212021223 in words is "two billion, two hundred twelve million, twenty-one thousand, two hundred twenty-three".