12122121222122 has 8 divisors (see below), whose sum is σ = 18183785354436. Its totient is φ = 6060859437312.

The previous prime is 12122121222121. The next prime is 12122121222137. The reversal of 12122121222122 is 22122212122121.

It can be written as a sum of positive squares in 2 ways, for example, as 11520179551321 + 601941670801 = 3394139^2 + 775849^2 .

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 (12122121222121) 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, 100511543 + ... + 100632074.

Almost surely, 2^{12122121222122} is an apocalyptic number.

12122121222122 is a deficient number, since it is larger than the sum of its proper divisors (6061664132314).

12122121222122 is a wasteful number, since it uses less digits than its factorization.

12122121222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201173752.

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

Adding to 12122121222122 its reverse (22122212122121), we get a palindrome (34244333344243).

The spelling of 12122121222122 in words is "twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".