12222122342 has 4 divisors (see below), whose sum is σ = 18333183516. Its totient is φ = 6111061170.

The previous prime is 12222122323. The next prime is 12222122351. The reversal of 12222122342 is 24322122221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24322122221 = 8629 ⋅2818649.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3055530584 + ... + 3055530587.

It is an arithmetic number, because the mean of its divisors is an integer number (4583295879).

Almost surely, 2^12222122342 is an apocalyptic number.

12222122342 is a deficient number, since it is larger than the sum of its proper divisors (6111061174).

12222122342 is an equidigital number, since it uses as much as digits as its factorization.

12222122342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111061173.

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

Adding to 12222122342 its reverse (24322122221), we get a palindrome (36544244563).

The spelling of 12222122342 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, three hundred forty-two".