812011 has 2 divisors, whose sum is σ = 812012. Its totient is φ = 812010.

The previous prime is 811997. The next prime is 812033. The reversal of 812011 is 110218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812011 - 2¹³ = 803819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 811982 and 812000.

It is not a weakly prime, because it can be changed into another prime (812051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406005 + 406006.

It is an arithmetic number, because the mean of its divisors is an integer number (406006).

2⁸¹²⁰¹¹ is an apocalyptic number.

812011 is a deficient number, since it is larger than the sum of its proper divisors (1).

812011 is an equidigital number, since it uses as much as digits as its factorization.

812011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 812011 is about 901.1165296453. The cubic root of 812011 is about 93.2940551846.

Adding to 812011 its reverse (110218), we get a palindrome (922229).

The spelling of 812011 in words is "eight hundred twelve thousand, eleven".