2121112222122 has 16 divisors (see below), whose sum is σ = 4345693333632. Its totient is φ = 689792592480.

The previous prime is 2121112222109. The next prime is 2121112222147. The reversal of 2121112222122 is 2212222111212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4311203458 + ... + 4311203949.

It is an arithmetic number, because the mean of its divisors is an integer number (271605833352).

Almost surely, 2^{2121112222122} is an apocalyptic number.

2121112222122 is an abundant number, since it is smaller than the sum of its proper divisors (2224581111510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121112222122 is a wasteful number, since it uses less digits than its factorization.

2121112222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622407453.

The product of its digits is 256, while the sum is 21.

Adding to 2121112222122 its reverse (2212222111212), we get a palindrome (4333334333334).

The spelling of 2121112222122 in words is "two trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".