220813374209 has 2 divisors, whose sum is σ = 220813374210. Its totient is φ = 220813374208.

The previous prime is 220813374191. The next prime is 220813374211. The reversal of 220813374209 is 902473318022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194220897025 + 26592477184 = 440705^2 + 163072^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220813374209 is a prime.

Together with 220813374211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220813374269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110406687104 + 110406687105.

It is an arithmetic number, because the mean of its divisors is an integer number (110406687105).

Almost surely, 2^220813374209 is an apocalyptic number.

It is an amenable number.

220813374209 is a deficient number, since it is larger than the sum of its proper divisors (1).

220813374209 is an equidigital number, since it uses as much as digits as its factorization.

220813374209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 220813374209 in words is "two hundred twenty billion, eight hundred thirteen million, three hundred seventy-four thousand, two hundred nine".