201011 has 2 divisors, whose sum is σ = 201012.
Its totient is φ = 201010.
The previous prime is 201007. The next prime is 201031. The reversal of 201011 is 110102.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 201011 - 22 = 201007 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 200986 and 201004.
It is not a weakly prime, because it can be changed into another prime (201031) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505 + 100506.
It is an arithmetic number, because the mean of its divisors is an integer number (100506).
2201011 is an apocalyptic number.
201011 is a deficient number, since it is larger than the sum of its proper divisors (1).
201011 is an equidigital number, since it uses as much as digits as its factorization.
201011 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2, while the sum is 5.
The square root of 201011 is about 448.3425030041.
The cubic root of 201011 is about 58.5787285879.
Adding to 201011 its reverse (110102), we get a palindrome (311113).
Subtracting from 201011 its reverse (110102), we obtain a palindrome (90909).
Multiplying 201011 by its reverse (110102), we get a palindrome (22131713122).
It can be divided in two parts, 20101 and 1, that added together give a palindrome (20102).
The spelling of 201011 in words is "two hundred one thousand, eleven", and thus it is an iban number.