12212243023 has 4 divisors (see below), whose sum is σ = 12212600688. Its totient is φ = 12211885360.

The previous prime is 12212243003. The next prime is 12212243081. The reversal of 12212243023 is 32034221221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32034221221 = 23 ⋅1392792227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212243023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212242985 and 12212243003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212243003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121486 + ... + 197947.

It is an arithmetic number, because the mean of its divisors is an integer number (3053150172).

Almost surely, 2^12212243023 is an apocalyptic number.

12212243023 is a deficient number, since it is larger than the sum of its proper divisors (357665).

12212243023 is an equidigital number, since it uses as much as digits as its factorization.

12212243023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357664.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12212243023 its reverse (32034221221), we get a palindrome (44246464244).

The spelling of 12212243023 in words is "twelve billion, two hundred twelve million, two hundred forty-three thousand, twenty-three".