220705238329 has 2 divisors, whose sum is σ = 220705238330. Its totient is φ = 220705238328.

The previous prime is 220705238227. The next prime is 220705238339. The reversal of 220705238329 is 923832507022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205372112400 + 15333125929 = 453180^2 + 123827^2 .

It is a cyclic number.

It is not a de Polignac number, because 220705238329 - 2³⁵ = 186345499961 is a prime.

It is not a weakly prime, because it can be changed into another prime (220705238339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110352619164 + 110352619165.

It is an arithmetic number, because the mean of its divisors is an integer number (110352619165).

Almost surely, 2^220705238329 is an apocalyptic number.

It is an amenable number.

220705238329 is a deficient number, since it is larger than the sum of its proper divisors (1).

220705238329 is an equidigital number, since it uses as much as digits as its factorization.

220705238329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 220705238329 in words is "two hundred twenty billion, seven hundred five million, two hundred thirty-eight thousand, three hundred twenty-nine".