200000020197 has 4 divisors (see below), whose sum is σ = 266666693600. Its totient is φ = 133333346796.

The previous prime is 200000020189. The next prime is 200000020217. The reversal of 200000020197 is 791020000002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 200000020197 - 2³ = 200000020189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000020697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33333336697 + ... + 33333336702.

It is an arithmetic number, because the mean of its divisors is an integer number (66666673400).

Almost surely, 2^200000020197 is an apocalyptic number.

It is an amenable number.

200000020197 is a deficient number, since it is larger than the sum of its proper divisors (66666673403).

200000020197 is an equidigital number, since it uses as much as digits as its factorization.

200000020197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66666673402.

The product of its (nonzero) digits is 252, while the sum is 21.

Adding to 200000020197 its reverse (791020000002), we get a palindrome (991020020199).

The spelling of 200000020197 in words is "two hundred billion, twenty thousand, one hundred ninety-seven".