121122121222 has 8 divisors (see below), whose sum is σ = 181880881200. Its totient is φ = 60495160824.

The previous prime is 121122121217. The next prime is 121122121243. The reversal of 121122121222 is 222121221121.

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

It is a super-3 number, since 3×121122121222³ (a number of 34 digits) contains 333 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121122121222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32947597 + ... + 32951272.

It is an arithmetic number, because the mean of its divisors is an integer number (22735110150).

Almost surely, 2^121122121222 is an apocalyptic number.

121122121222 is a deficient number, since it is larger than the sum of its proper divisors (60758759978).

121122121222 is an equidigital number, since it uses as much as digits as its factorization.

121122121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65899790.

The product of its digits is 128, while the sum is 19.

Adding to 121122121222 its reverse (222121221121), we get a palindrome (343243342343).

The spelling of 121122121222 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".