221142324313 has 4 divisors (see below), whose sum is σ = 223627069620. Its totient is φ = 218657579008.

The previous prime is 221142324311. The next prime is 221142324329. The reversal of 221142324313 is 313423241122.

221142324313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 103443927129 + 117698397184 = 321627^2 + 343072^2 .

It is a cyclic number.

It is not a de Polignac number, because 221142324313 - 2¹ = 221142324311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221142324311) 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, 1242372520 + ... + 1242372697.

It is an arithmetic number, because the mean of its divisors is an integer number (55906767405).

Almost surely, 2^221142324313 is an apocalyptic number.

It is an amenable number.

221142324313 is a deficient number, since it is larger than the sum of its proper divisors (2484745307).

221142324313 is an equidigital number, since it uses as much as digits as its factorization.

221142324313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484745306.

The product of its digits is 6912, while the sum is 28.

Adding to 221142324313 its reverse (313423241122), we get a palindrome (534565565435).

The spelling of 221142324313 in words is "two hundred twenty-one billion, one hundred forty-two million, three hundred twenty-four thousand, three hundred thirteen".