2112122121222 has 8 divisors (see below), whose sum is σ = 4224244242456. Its totient is φ = 704040707072.

The previous prime is 2112122121077. The next prime is 2112122121233. The reversal of 2112122121222 is 2221212212112.

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

2112122121222 is an admirable number.

It is a super-2 number, since 2×2112122121222² (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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176010176763 + ... + 176010176774.

It is an arithmetic number, because the mean of its divisors is an integer number (528030530307).

Almost surely, 2^{2112122121222} is an apocalyptic number.

2112122121222 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.

2112122121222 is a wasteful number, since it uses less digits than its factorization.

2112122121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352020353542.

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

Adding to 2112122121222 its reverse (2221212212112), we get a palindrome (4333334333334).

The spelling of 2112122121222 in words is "two trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".