211220012011222 has 16 divisors (see below), whose sum is σ = 317038430116800. Its totient is φ = 105540540542280.

The previous prime is 211220012011207. The next prime is 211220012011259. The reversal of 211220012011222 is 222110210022112.

It is a super-2 number, since 2×211220012011222² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211220012011222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80207929 + ... + 82799467.

It is an arithmetic number, because the mean of its divisors is an integer number (19814901882300).

Almost surely, 2^{211220012011222} is an apocalyptic number.

211220012011222 is a deficient number, since it is larger than the sum of its proper divisors (105818418105578).

211220012011222 is a wasteful number, since it uses less digits than its factorization.

211220012011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618331.

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

Adding to 211220012011222 its reverse (222110210022112), we get a palindrome (433330222033334).

The spelling of 211220012011222 in words is "two hundred eleven trillion, two hundred twenty billion, twelve million, eleven thousand, two hundred twenty-two".