201020020194 has 32 divisors (see below), whose sum is σ = 479451479040. Its totient is φ = 54937148112.

The previous prime is 201020020193. The next prime is 201020020259. The reversal of 201020020194 is 491020020102.

201020020194 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 201020020194.

It is not an unprimeable number, because it can be changed into a prime (201020020193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104046664 + ... + 104048595.

It is an arithmetic number, because the mean of its divisors is an integer number (14982858720).

Almost surely, 2^201020020194 is an apocalyptic number.

201020020194 is an abundant number, since it is smaller than the sum of its proper divisors (278431458846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201020020194 is a wasteful number, since it uses less digits than its factorization.

201020020194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208095294.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201020020194 its reverse (491020020102), we get a palindrome (692040040296).

The spelling of 201020020194 in words is "two hundred one billion, twenty million, twenty thousand, one hundred ninety-four".