2111222112212 has 24 divisors (see below), whose sum is σ = 3728207082600. Its totient is φ = 1046024462336.

The previous prime is 2111222112199. The next prime is 2111222112271. The reversal of 2111222112212 is 2122112221112.

It can be written as a sum of positive squares in 4 ways, for example, as 371556078916 + 1739666033296 = 609554^2 + 1318964^2 .

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 7 ways as a sum of consecutive naturals, for example, 1394114 + ... + 2483142.

It is an arithmetic number, because the mean of its divisors is an integer number (155341961775).

Almost surely, 2^{2111222112212} is an apocalyptic number.

It is an amenable number.

2111222112212 is a deficient number, since it is larger than the sum of its proper divisors (1616984970388).

2111222112212 is a wasteful number, since it uses less digits than its factorization.

2111222112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093435 (or 1093433 counting only the distinct ones).

The product of its digits is 128, while the sum is 20.

Adding to 2111222112212 its reverse (2122112221112), we get a palindrome (4233334333324).

The spelling of 2111222112212 in words is "two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twelve".