2121222112222 has 8 divisors (see below), whose sum is σ = 3182441914296. Its totient is φ = 1060408140792.

The previous prime is 2121222112181. The next prime is 2121222112241. The reversal of 2121222112222 is 2222112221212.

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 = 2121222112193 and 2121222112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101444593 + ... + 101465500.

It is an arithmetic number, because the mean of its divisors is an integer number (397805239287).

Almost surely, 2^{2121222112222} is an apocalyptic number.

2121222112222 is a deficient number, since it is larger than the sum of its proper divisors (1061219802074).

2121222112222 is a wasteful number, since it uses less digits than its factorization.

2121222112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202915322.

The product of its digits is 512, while the sum is 22.

Adding to 2121222112222 its reverse (2222112221212), we get a palindrome (4343334333434).

The spelling of 2121222112222 in words is "two trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty-two".