2221210221211 has 4 divisors (see below), whose sum is σ = 2237190151000. Its totient is φ = 2205230291424.

The previous prime is 2221210221161. The next prime is 2221210221239. The reversal of 2221210221211 is 1121220121222.

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 2221210221211 - 2¹⁵ = 2221210188443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221210261211) 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, 7989964686 + ... + 7989964963.

It is an arithmetic number, because the mean of its divisors is an integer number (559297537750).

Almost surely, 2^{2221210221211} is an apocalyptic number.

2221210221211 is a deficient number, since it is larger than the sum of its proper divisors (15979929789).

2221210221211 is a wasteful number, since it uses less digits than its factorization.

2221210221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15979929788.

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

Adding to 2221210221211 its reverse (1121220121222), we get a palindrome (3342430342433).

The spelling of 2221210221211 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, two hundred eleven".