20200021097 has 2 divisors, whose sum is σ = 20200021098. Its totient is φ = 20200021096.

The previous prime is 20200021091. The next prime is 20200021103. The reversal of 20200021097 is 79012000202.

It is a balanced prime because it is at equal distance from previous prime (20200021091) and next prime (20200021103).

It can be written as a sum of positive squares in only one way, i.e., 20106105616 + 93915481 = 141796^2 + 9691^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200021097 - 2¹² = 20200017001 is a prime.

It is not a weakly prime, because it can be changed into another prime (20200021091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100010548 + 10100010549.

It is an arithmetic number, because the mean of its divisors is an integer number (10100010549).

Almost surely, 2^20200021097 is an apocalyptic number.

It is an amenable number.

20200021097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200021097 is an equidigital number, since it uses as much as digits as its factorization.

20200021097 is an evil number, because the sum of its binary digits is even.

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

Adding to 20200021097 its reverse (79012000202), we get a palindrome (99212021299).

The spelling of 20200021097 in words is "twenty billion, two hundred million, twenty-one thousand, ninety-seven".