2221331323105 has 4 divisors (see below), whose sum is σ = 2665597587732. Its totient is φ = 1777065058480.

The previous prime is 2221331323039. The next prime is 2221331323129. The reversal of 2221331323105 is 5013231331222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 936681359329 + 1284649963776 = 967823^2 + 1133424^2 .

It is not a de Polignac number, because 2221331323105 - 2²¹ = 2221329225953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222133132306 + ... + 222133132315.

It is an arithmetic number, because the mean of its divisors is an integer number (666399396933).

Almost surely, 2^{2221331323105} is an apocalyptic number.

It is an amenable number.

2221331323105 is a deficient number, since it is larger than the sum of its proper divisors (444266264627).

2221331323105 is an equidigital number, since it uses as much as digits as its factorization.

2221331323105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444266264626.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 2221331323105 its reverse (5013231331222), we get a palindrome (7234562654327).

The spelling of 2221331323105 in words is "two trillion, two hundred twenty-one billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred five".