2111121222222 has 8 divisors (see below), whose sum is σ = 4222242444456. Its totient is φ = 703707074072.

The previous prime is 2111121222209. The next prime is 2111121222227. The reversal of 2111121222222 is 2222221211112.

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

2111121222222 is an admirable number.

It is a super-2 number, since 2×2111121222222² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111121222227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175926768513 + ... + 175926768524.

It is an arithmetic number, because the mean of its divisors is an integer number (527780305557).

Almost surely, 2^{2111121222222} is an apocalyptic number.

2111121222222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2111121222222 is a wasteful number, since it uses less digits than its factorization.

2111121222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351853537042.

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

Adding to 2111121222222 its reverse (2222221211112), we get a palindrome (4333342433334).

The spelling of 2111121222222 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".