1012811 has 2 divisors, whose sum is σ = 1012812. Its totient is φ = 1012810.

The previous prime is 1012789. The next prime is 1012829. The reversal of 1012811 is 1182101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1012811 - 2¹⁸ = 750667 is a prime.

It is a super-2 number, since 2×1012811² = 2051572243442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1012831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506405 + 506406.

It is an arithmetic number, because the mean of its divisors is an integer number (506406).

2^1012811 is an apocalyptic number.

1012811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012811 is an equidigital number, since it uses as much as digits as its factorization.

1012811 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 14.

The square root of 1012811 is about 1006.3851151522. The cubic root of 1012811 is about 100.4252226276.

Adding to 1012811 its reverse (1182101), we get a palindrome (2194912).

It can be divided in two parts, 10 and 12811, that added together give a palindrome (12821).

The spelling of 1012811 in words is "one million, twelve thousand, eight hundred eleven".