201200081 has 2 divisors, whose sum is σ = 201200082. Its totient is φ = 201200080.

The previous prime is 201200071. The next prime is 201200183. The reversal of 201200081 is 180002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199798225 + 1401856 = 14135^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 201200081 - 2⁶ = 201200017 is a prime.

It is a super-2 number, since 2×201200081² = 80962945188813122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201200071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600040 + 100600041.

It is an arithmetic number, because the mean of its divisors is an integer number (100600041).

Almost surely, 2^201200081 is an apocalyptic number.

It is an amenable number.

201200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

201200081 is an equidigital number, since it uses as much as digits as its factorization.

201200081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 201200081 is about 14184.5014364270. The cubic root of 201200081 is about 585.9709019242.

Adding to 201200081 its reverse (180002102), we get a palindrome (381202183).

The spelling of 201200081 in words is "two hundred one million, two hundred thousand, eighty-one".