201211013 has 2 divisors, whose sum is σ = 201211014. Its totient is φ = 201211012.

The previous prime is 201211009. The next prime is 201211027. The reversal of 201211013 is 310112102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183250369 + 17960644 = 13537^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 201211013 - 2² = 201211009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201210985 and 201211003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201211033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605506 + 100605507.

It is an arithmetic number, because the mean of its divisors is an integer number (100605507).

Almost surely, 2^201211013 is an apocalyptic number.

It is an amenable number.

201211013 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211013 is an equidigital number, since it uses as much as digits as its factorization.

201211013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 201211013 is about 14184.8867813599. The cubic root of 201211013 is about 585.9815144413.

Adding to 201211013 its reverse (310112102), we get a palindrome (511323115).

The spelling of 201211013 in words is "two hundred one million, two hundred eleven thousand, thirteen".