27220050217 has 2 divisors, whose sum is σ = 27220050218. Its totient is φ = 27220050216.

The previous prime is 27220050181. The next prime is 27220050241. The reversal of 27220050217 is 71205002272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26055125056 + 1164925161 = 161416^2 + 34131^2 .

It is a cyclic number.

It is not a de Polignac number, because 27220050217 - 2¹¹ = 27220048169 is a prime.

It is a super-2 number, since 2×27220050217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27220050287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13610025108 + 13610025109.

It is an arithmetic number, because the mean of its divisors is an integer number (13610025109).

Almost surely, 2^27220050217 is an apocalyptic number.

It is an amenable number.

27220050217 is a deficient number, since it is larger than the sum of its proper divisors (1).

27220050217 is an equidigital number, since it uses as much as digits as its factorization.

27220050217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

Adding to 27220050217 its reverse (71205002272), we get a palindrome (98425052489).

The spelling of 27220050217 in words is "twenty-seven billion, two hundred twenty million, fifty thousand, two hundred seventeen".