2221210212211 has 4 divisors (see below), whose sum is σ = 2221613853952. Its totient is φ = 2220806570472.

The previous prime is 2221210212191. The next prime is 2221210212227. The reversal of 2221210212211 is 1122120121222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2221210212211 - 2¹⁹ = 2221209687923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221210212281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 201812616 + ... + 201823621.

It is an arithmetic number, because the mean of its divisors is an integer number (555403463488).

Almost surely, 2^{2221210212211} is an apocalyptic number.

2221210212211 is a deficient number, since it is larger than the sum of its proper divisors (403641741).

2221210212211 is an equidigital number, since it uses as much as digits as its factorization.

2221210212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403641740.

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

Adding to 2221210212211 its reverse (1122120121222), we get a palindrome (3343330333433).

The spelling of 2221210212211 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred eleven".