2221211120221 has 16 divisors (see below), whose sum is σ = 2297705050368. Its totient is φ = 2145784118400.

The previous prime is 2221211120159. The next prime is 2221211120239. The reversal of 2221211120221 is 1220211121222.

It is a cyclic number.

It is not a de Polignac number, because 2221211120221 - 2²¹ = 2221209023069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221211120621) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58178080 + ... + 58216246.

It is an arithmetic number, because the mean of its divisors is an integer number (143606565648).

Almost surely, 2^{2221211120221} is an apocalyptic number.

It is an amenable number.

2221211120221 is a deficient number, since it is larger than the sum of its proper divisors (76493930147).

2221211120221 is a wasteful number, since it uses less digits than its factorization.

2221211120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52092.

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

Adding to 2221211120221 its reverse (1220211121222), we get a palindrome (3441422241443).

It can be divided in two parts, 2221211 and 120221, that added together give a palindrome (2341432).

The spelling of 2221211120221 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty-one".