202100200097 has 4 divisors (see below), whose sum is σ = 203387462676. Its totient is φ = 200812937520.

The previous prime is 202100200091. The next prime is 202100200123. The reversal of 202100200097 is 790002001202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790002001202 = 2 ⋅395001000601.

It can be written as a sum of positive squares in 2 ways, for example, as 24042363136 + 178057836961 = 155056^2 + 421969^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100200097 - 2¹⁰ = 202100199073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202100200091) 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 in 3 ways as a sum of consecutive naturals, for example, 643631054 + ... + 643631367.

It is an arithmetic number, because the mean of its divisors is an integer number (50846865669).

Almost surely, 2^202100200097 is an apocalyptic number.

It is an amenable number.

202100200097 is a deficient number, since it is larger than the sum of its proper divisors (1287262579).

202100200097 is a wasteful number, since it uses less digits than its factorization.

202100200097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287262578.

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

Adding to 202100200097 its reverse (790002001202), we get a palindrome (992102201299).

The spelling of 202100200097 in words is "two hundred two billion, one hundred million, two hundred thousand, ninety-seven".