201501011 has 2 divisors, whose sum is σ = 201501012. Its totient is φ = 201501010.

The previous prime is 201500977. The next prime is 201501049. The reversal of 201501011 is 110105102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201501011 - 2¹⁸ = 201238867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201500983 and 201501001.

It is not a weakly prime, because it can be changed into another prime (201503011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100750505 + 100750506.

It is an arithmetic number, because the mean of its divisors is an integer number (100750506).

Almost surely, 2^201501011 is an apocalyptic number.

201501011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201501011 is an equidigital number, since it uses as much as digits as its factorization.

201501011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 201501011 is about 14195.1051774899. The cubic root of 201501011 is about 586.2628971390.

Adding to 201501011 its reverse (110105102), we get a palindrome (311606113).

The spelling of 201501011 in words is "two hundred one million, five hundred one thousand, eleven".