221085295393 has 2 divisors, whose sum is σ = 221085295394. Its totient is φ = 221085295392.

The previous prime is 221085295339. The next prime is 221085295447. The reversal of 221085295393 is 393592580122.

Together with previous prime (221085295339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (221085295339) and next prime (221085295447).

It can be written as a sum of positive squares in only one way, i.e., 190364670864 + 30720624529 = 436308^2 + 175273^2 .

It is a cyclic number.

It is not a de Polignac number, because 221085295393 - 2³³ = 212495360801 is a prime.

It is not a weakly prime, because it can be changed into another prime (221085295313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110542647696 + 110542647697.

It is an arithmetic number, because the mean of its divisors is an integer number (110542647697).

Almost surely, 2^221085295393 is an apocalyptic number.

It is an amenable number.

221085295393 is a deficient number, since it is larger than the sum of its proper divisors (1).

221085295393 is an equidigital number, since it uses as much as digits as its factorization.

221085295393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 221085295393 in words is "two hundred twenty-one billion, eighty-five million, two hundred ninety-five thousand, three hundred ninety-three".