221331120293 has 2 divisors, whose sum is σ = 221331120294. Its totient is φ = 221331120292.

The previous prime is 221331120247. The next prime is 221331120379. The reversal of 221331120293 is 392021133122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204102457729 + 17228662564 = 451777^2 + 131258^2 .

It is a cyclic number.

It is not a de Polignac number, because 221331120293 - 2⁶ = 221331120229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221331120233) 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 as a sum of consecutive naturals, namely, 110665560146 + 110665560147.

It is an arithmetic number, because the mean of its divisors is an integer number (110665560147).

Almost surely, 2^221331120293 is an apocalyptic number.

It is an amenable number.

221331120293 is a deficient number, since it is larger than the sum of its proper divisors (1).

221331120293 is an equidigital number, since it uses as much as digits as its factorization.

221331120293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 221331120293 in words is "two hundred twenty-one billion, three hundred thirty-one million, one hundred twenty thousand, two hundred ninety-three".