205155122219 has 2 divisors, whose sum is σ = 205155122220. Its totient is φ = 205155122218.

The previous prime is 205155122203. The next prime is 205155122281. The reversal of 205155122219 is 912221551502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205155122219 - 2⁴ = 205155122203 is a prime.

It is a super-2 number, since 2×205155122219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205155122119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102577561109 + 102577561110.

It is an arithmetic number, because the mean of its divisors is an integer number (102577561110).

Almost surely, 2^205155122219 is an apocalyptic number.

205155122219 is a deficient number, since it is larger than the sum of its proper divisors (1).

205155122219 is an equidigital number, since it uses as much as digits as its factorization.

205155122219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 205155122219 in words is "two hundred five billion, one hundred fifty-five million, one hundred twenty-two thousand, two hundred nineteen".