221393219041 has 4 divisors (see below), whose sum is σ = 221752041732. Its totient is φ = 221034396352.

The previous prime is 221393219029. The next prime is 221393219083. The reversal of 221393219041 is 140912393122.

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 73319100625 + 148074118416 = 270775^2 + 384804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221393219041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221393214041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179410420 + ... + 179411653.

It is an arithmetic number, because the mean of its divisors is an integer number (55438010433).

Almost surely, 2^221393219041 is an apocalyptic number.

It is an amenable number.

221393219041 is a deficient number, since it is larger than the sum of its proper divisors (358822691).

221393219041 is an equidigital number, since it uses as much as digits as its factorization.

221393219041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358822690.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 221393219041 in words is "two hundred twenty-one billion, three hundred ninety-three million, two hundred nineteen thousand, forty-one".