2211222121222 has 8 divisors (see below), whose sum is σ = 3316848355656. Its totient is φ = 1105606002672.

The previous prime is 2211222121193. The next prime is 2211222121289. The reversal of 2211222121222 is 2221212221122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2211222121222³ (a number of 38 digits) contains 333 as substring.

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 = 2211222121193 and 2211222121202.

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, 1956588 + ... + 2872399.

It is an arithmetic number, because the mean of its divisors is an integer number (414606044457).

Almost surely, 2^{2211222121222} is an apocalyptic number.

2211222121222 is a deficient number, since it is larger than the sum of its proper divisors (1105626234434).

2211222121222 is a wasteful number, since it uses less digits than its factorization.

2211222121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057942.

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

Adding to 2211222121222 its reverse (2221212221122), we get a palindrome (4432434342344).

The spelling of 2211222121222 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".