220021959713 has 2 divisors, whose sum is σ = 220021959714. Its totient is φ = 220021959712.

The previous prime is 220021959659. The next prime is 220021959737. The reversal of 220021959713 is 317959120022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219705937984 + 316021729 = 468728^2 + 17777^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021959713 - 2²⁰ = 220020911137 is a prime.

It is not a weakly prime, because it can be changed into another prime (220021919713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010979856 + 110010979857.

It is an arithmetic number, because the mean of its divisors is an integer number (110010979857).

Almost surely, 2^220021959713 is an apocalyptic number.

It is an amenable number.

220021959713 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021959713 is an equidigital number, since it uses as much as digits as its factorization.

220021959713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The spelling of 220021959713 in words is "two hundred twenty billion, twenty-one million, nine hundred fifty-nine thousand, seven hundred thirteen".