2221212101212 has 24 divisors (see below), whose sum is σ = 4198125176000. Its totient is φ = 1022237343936.

The previous prime is 2221212101201. The next prime is 2221212101237. The reversal of 2221212101212 is 2121012121222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221212101212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61179012 + ... + 61215307.

Almost surely, 2^{2221212101212} is an apocalyptic number.

It is an amenable number.

2221212101212 is a deficient number, since it is larger than the sum of its proper divisors (1976913074788).

2221212101212 is a wasteful number, since it uses less digits than its factorization.

2221212101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122394685 (or 122394683 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221212101212 its reverse (2121012121222), we get a palindrome (4342224222434).

The spelling of 2221212101212 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred one thousand, two hundred twelve".