215120063 has 2 divisors, whose sum is σ = 215120064. Its totient is φ = 215120062.

The previous prime is 215120041. The next prime is 215120069. The reversal of 215120063 is 360021512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215120063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215120069) 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, 107560031 + 107560032.

It is an arithmetic number, because the mean of its divisors is an integer number (107560032).

Almost surely, 2^215120063 is an apocalyptic number.

215120063 is a deficient number, since it is larger than the sum of its proper divisors (1).

215120063 is an equidigital number, since it uses as much as digits as its factorization.

215120063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 215120063 is about 14666.9718415220. The cubic root of 215120063 is about 599.1841346275.

Adding to 215120063 its reverse (360021512), we get a palindrome (575141575).

The spelling of 215120063 in words is "two hundred fifteen million, one hundred twenty thousand, sixty-three".