811043220304011 has 16 divisors (see below), whose sum is σ = 1101817438815744. Its totient is φ = 530482664615904.

The previous prime is 811043220303997. The next prime is 811043220304063. The reversal of 811043220304011 is 110403022340118.

It is not a de Polignac number, because 811043220304011 - 2⁶ = 811043220303947 is a prime.

It is a super-2 number, since 2×811043220304011² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 811043220304011.

It is not an unprimeable number, because it can be changed into a prime (811043220304081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45266451 + ... + 60589916.

It is an arithmetic number, because the mean of its divisors is an integer number (68863589925984).

Almost surely, 2^{811043220304011} is an apocalyptic number.

811043220304011 is a deficient number, since it is larger than the sum of its proper divisors (290774218511733).

811043220304011 is a wasteful number, since it uses less digits than its factorization.

811043220304011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105904610.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 811043220304011 its reverse (110403022340118), we get a palindrome (921446242644129).

The spelling of 811043220304011 in words is "eight hundred eleven trillion, forty-three billion, two hundred twenty million, three hundred four thousand, eleven".