212222121122 has 8 divisors (see below), whose sum is σ = 347272561872. Its totient is φ = 96464600500.

The previous prime is 212222121121. The next prime is 212222121127. The reversal of 212222121122 is 221121222212.

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 a junction number, because it is equal to n+sod(n) for n = 212222121094 and 212222121103.

It is not an unprimeable number, because it can be changed into a prime (212222121121) by changing a digit.

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, 4823230004 + ... + 4823230047.

It is an arithmetic number, because the mean of its divisors is an integer number (43409070234).

Almost surely, 2^212222121122 is an apocalyptic number.

212222121122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212222121122 is a deficient number, since it is larger than the sum of its proper divisors (135050440750).

212222121122 is a wasteful number, since it uses less digits than its factorization.

212222121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646460064.

The product of its digits is 256, while the sum is 20.

Adding to 212222121122 its reverse (221121222212), we get a palindrome (433343343334).

The spelling of 212222121122 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".