20102220219997 has 2 divisors, whose sum is σ = 20102220219998. Its totient is φ = 20102220219996.

The previous prime is 20102220219953. The next prime is 20102220220091. The reversal of 20102220219997 is 79991202220102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13181590377316 + 6920629842681 = 3630646^2 + 2630709^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102220219997 - 2²³ = 20102211831389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102220219397) 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, 10051110109998 + 10051110109999.

It is an arithmetic number, because the mean of its divisors is an integer number (10051110109999).

Almost surely, 2^{20102220219997} is an apocalyptic number.

It is an amenable number.

20102220219997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102220219997 is an equidigital number, since it uses as much as digits as its factorization.

20102220219997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 20102220219997 in words is "twenty trillion, one hundred two billion, two hundred twenty million, two hundred nineteen thousand, nine hundred ninety-seven".