2221002221212 has 12 divisors (see below), whose sum is σ = 4091319881320. Its totient is φ = 1052053683696.

The previous prime is 2221002221201. The next prime is 2221002221261. The reversal of 2221002221212 is 2121222001222.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 2221002221212.

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 3 ways as a sum of consecutive naturals, for example, 14611856643 + ... + 14611856794.

Almost surely, 2^{2221002221212} is an apocalyptic number.

It is an amenable number.

2221002221212 is a deficient number, since it is larger than the sum of its proper divisors (1870317660108).

2221002221212 is a wasteful number, since it uses less digits than its factorization.

2221002221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29223713460 (or 29223713458 counting only the distinct ones).

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

Adding to 2221002221212 its reverse (2121222001222), we get a palindrome (4342224222434).

The spelling of 2221002221212 in words is "two trillion, two hundred twenty-one billion, two million, two hundred twenty-one thousand, two hundred twelve".