215220230591 has 2 divisors, whose sum is σ = 215220230592. Its totient is φ = 215220230590.

The previous prime is 215220230531. The next prime is 215220230651. The reversal of 215220230591 is 195032022512.

It is a balanced prime because it is at equal distance from previous prime (215220230531) and next prime (215220230651).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215220230591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215220230531) 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, 107610115295 + 107610115296.

It is an arithmetic number, because the mean of its divisors is an integer number (107610115296).

Almost surely, 2^215220230591 is an apocalyptic number.

215220230591 is a deficient number, since it is larger than the sum of its proper divisors (1).

215220230591 is an equidigital number, since it uses as much as digits as its factorization.

215220230591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 215220230591 in words is "two hundred fifteen billion, two hundred twenty million, two hundred thirty thousand, five hundred ninety-one".