20102020097 has 2 divisors, whose sum is σ = 20102020098. Its totient is φ = 20102020096.

The previous prime is 20102020087. The next prime is 20102020139. The reversal of 20102020097 is 79002020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18960188416 + 1141831681 = 137696^2 + 33791^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102020097 - 2¹⁰ = 20102019073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102020087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051010048 + 10051010049.

It is an arithmetic number, because the mean of its divisors is an integer number (10051010049).

Almost surely, 2^20102020097 is an apocalyptic number.

It is an amenable number.

20102020097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102020097 is an equidigital number, since it uses as much as digits as its factorization.

20102020097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 20102020097 its reverse (79002020102), we get a palindrome (99104040199).

The spelling of 20102020097 in words is "twenty billion, one hundred two million, twenty thousand, ninety-seven".