220695077221 has 2 divisors, whose sum is σ = 220695077222. Its totient is φ = 220695077220.

The previous prime is 220695077191. The next prime is 220695077279. The reversal of 220695077221 is 122770596022.

220695077221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199196186596 + 21498890625 = 446314^2 + 146625^2 .

It is a cyclic number.

It is not a de Polignac number, because 220695077221 - 2¹³ = 220695069029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220695077621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110347538610 + 110347538611.

It is an arithmetic number, because the mean of its divisors is an integer number (110347538611).

Almost surely, 2^220695077221 is an apocalyptic number.

It is an amenable number.

220695077221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220695077221 is an equidigital number, since it uses as much as digits as its factorization.

220695077221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 220695077221 in words is "two hundred twenty billion, six hundred ninety-five million, seventy-seven thousand, two hundred twenty-one".