215839222097 has 2 divisors, whose sum is σ = 215839222098. Its totient is φ = 215839222096.

The previous prime is 215839222091. The next prime is 215839222103. The reversal of 215839222097 is 790222938512.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (215839222091) and next prime (215839222103).

It can be written as a sum of positive squares in only one way, i.e., 176111158336 + 39728063761 = 419656^2 + 199319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215839222097 is a prime.

It is not a weakly prime, because it can be changed into another prime (215839222091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107919611048 + 107919611049.

It is an arithmetic number, because the mean of its divisors is an integer number (107919611049).

Almost surely, 2^215839222097 is an apocalyptic number.

It is an amenable number.

215839222097 is a deficient number, since it is larger than the sum of its proper divisors (1).

215839222097 is an equidigital number, since it uses as much as digits as its factorization.

215839222097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 215839222097 in words is "two hundred fifteen billion, eight hundred thirty-nine million, two hundred twenty-two thousand, ninety-seven".