201020047 has 2 divisors, whose sum is σ = 201020048. Its totient is φ = 201020046.

The previous prime is 201020041. The next prime is 201020101. The reversal of 201020047 is 740020102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201020047 - 2⁷ = 201019919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201020047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201020041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510023 + 100510024.

It is an arithmetic number, because the mean of its divisors is an integer number (100510024).

Almost surely, 2^201020047 is an apocalyptic number.

201020047 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020047 is an equidigital number, since it uses as much as digits as its factorization.

201020047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 201020047 is about 14178.1538643083. The cubic root of 201020047 is about 585.7960740182.

Adding to 201020047 its reverse (740020102), we get a palindrome (941040149).

The spelling of 201020047 in words is "two hundred one million, twenty thousand, forty-seven".