2121211121222 has 16 divisors (see below), whose sum is σ = 3183252134400. Its totient is φ = 1060127171400.

The previous prime is 2121211121219. The next prime is 2121211121257. The reversal of 2121211121222 is 2221211121212.

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 = 2121211121194 and 2121211121203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61433279 + ... + 61467797.

It is an arithmetic number, because the mean of its divisors is an integer number (198953258400).

Almost surely, 2^{2121211121222} is an apocalyptic number.

2121211121222 is a deficient number, since it is larger than the sum of its proper divisors (1062041013178).

2121211121222 is a wasteful number, since it uses less digits than its factorization.

2121211121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47491.

The product of its digits is 128, while the sum is 20.

Adding to 2121211121222 its reverse (2221211121212), we get a palindrome (4342422242434).

The spelling of 2121211121222 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".