2212222121222 has 4 divisors (see below), whose sum is σ = 3318333181836. Its totient is φ = 1106111060610.

The previous prime is 2212222121191. The next prime is 2212222121273. The reversal of 2212222121222 is 2221212222122.

It is a semiprime because it is the product of two primes.

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

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 as a sum of consecutive naturals, namely, 553055530304 + ... + 553055530307.

It is an arithmetic number, because the mean of its divisors is an integer number (829583295459).

Almost surely, 2^{2212222121222} is an apocalyptic number.

2212222121222 is a deficient number, since it is larger than the sum of its proper divisors (1106111060614).

2212222121222 is a wasteful number, since it uses less digits than its factorization.

2212222121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106111060613.

The product of its digits is 1024, while the sum is 23.

Adding to 2212222121222 its reverse (2221212222122), we get a palindrome (4433434343344).

The spelling of 2212222121222 in words is "two trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".