2221301331221 has 12 divisors (see below), whose sum is σ = 2589357294720. Its totient is φ = 1899997659000.

The previous prime is 2221301331217. The next prime is 2221301331229. The reversal of 2221301331221 is 1221331031222.

It is not a de Polignac number, because 2221301331221 - 2² = 2221301331217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221301331229) 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 11 ways as a sum of consecutive naturals, for example, 47296655 + ... + 47343596.

It is an arithmetic number, because the mean of its divisors is an integer number (215779774560).

Almost surely, 2^{2221301331221} is an apocalyptic number.

It is an amenable number.

2221301331221 is a deficient number, since it is larger than the sum of its proper divisors (368055963499).

2221301331221 is an equidigital number, since it uses as much as digits as its factorization.

2221301331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94640744 (or 94640737 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2221301331221 its reverse (1221331031222), we get a palindrome (3442632362443).

The spelling of 2221301331221 in words is "two trillion, two hundred twenty-one billion, three hundred one million, three hundred thirty-one thousand, two hundred twenty-one".