2222212100212 has 72 divisors (see below), whose sum is σ = 4510807861896. Its totient is φ = 948942391296.

The previous prime is 2222212100209. The next prime is 2222212100233. The reversal of 2222212100212 is 2120012122222.

It can be written as a sum of positive squares in 4 ways, for example, as 573360926436 + 1648851173776 = 757206^2 + 1284076^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2222212100212.

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 in 23 ways as a sum of consecutive naturals, for example, 2716128 + ... + 3438280.

It is an arithmetic number, because the mean of its divisors is an integer number (62650109193).

Almost surely, 2^{2222212100212} is an apocalyptic number.

It is an amenable number.

2222212100212 is an abundant number, since it is smaller than the sum of its proper divisors (2288595761684).

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

2222212100212 is a wasteful number, since it uses less digits than its factorization.

2222212100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722305 (or 722244 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222212100212 its reverse (2120012122222), we get a palindrome (4342224222434).

The spelling of 2222212100212 in words is "two trillion, two hundred twenty-two billion, two hundred twelve million, one hundred thousand, two hundred twelve".