2221302311221 has 24 divisors (see below), whose sum is σ = 2727538920000. Its totient is φ = 1798739599104.

The previous prime is 2221302311177. The next prime is 2221302311281. The reversal of 2221302311221 is 1221132031222.

It is not a de Polignac number, because 2221302311221 - 2¹³ = 2221302303029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221302311192 and 2221302311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221302311281) 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 23 ways as a sum of consecutive naturals, for example, 2988796 + ... + 3657253.

It is an arithmetic number, because the mean of its divisors is an integer number (113647455000).

Almost surely, 2^{2221302311221} is an apocalyptic number.

It is an amenable number.

2221302311221 is a deficient number, since it is larger than the sum of its proper divisors (506236608779).

2221302311221 is a wasteful number, since it uses less digits than its factorization.

2221302311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6646441 (or 6646434 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2221302311221 its reverse (1221132031222), we get a palindrome (3442434342443).

The spelling of 2221302311221 in words is "two trillion, two hundred twenty-one billion, three hundred two million, three hundred eleven thousand, two hundred twenty-one".