12222215023 has 4 divisors (see below), whose sum is σ = 12243695760. Its totient is φ = 12200734288.

The previous prime is 12222215011. The next prime is 12222215029. The reversal of 12222215023 is 32051222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32051222221 = 17 ⋅1885366013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222215023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222214985 and 12222215003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222215029) 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, 10739515 + ... + 10740652.

It is an arithmetic number, because the mean of its divisors is an integer number (3060923940).

Almost surely, 2^12222215023 is an apocalyptic number.

12222215023 is a deficient number, since it is larger than the sum of its proper divisors (21480737).

12222215023 is an equidigital number, since it uses as much as digits as its factorization.

12222215023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21480736.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12222215023 its reverse (32051222221), we get a palindrome (44273437244).

The spelling of 12222215023 in words is "twelve billion, two hundred twenty-two million, two hundred fifteen thousand, twenty-three".