12122221212122 has 8 divisors (see below), whose sum is σ = 20780950649376. Its totient is φ = 5195237662332.

The previous prime is 12122221212121. The next prime is 12122221212151. The reversal of 12122221212122 is 22121212222121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12122221212121) 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, 432936471848 + ... + 432936471875.

It is an arithmetic number, because the mean of its divisors is an integer number (2597618831172).

Almost surely, 2^{12122221212122} is an apocalyptic number.

12122221212122 is a deficient number, since it is larger than the sum of its proper divisors (8658729437254).

12122221212122 is an equidigital number, since it uses as much as digits as its factorization.

12122221212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865872943732.

The product of its digits is 512, while the sum is 23.

Adding to 12122221212122 its reverse (22121212222121), we get a palindrome (34243433434243).

The spelling of 12122221212122 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".