1200811 has 2 divisors, whose sum is σ = 1200812. Its totient is φ = 1200810.

The previous prime is 1200809. The next prime is 1200833. The reversal of 1200811 is 1180021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1200811 - 2¹ = 1200809 is a prime.

Together with 1200809, it forms a pair of twin primes.

1200811 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1200791 and 1200800.

It is not a weakly prime, because it can be changed into another prime (1200611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600405 + 600406.

It is an arithmetic number, because the mean of its divisors is an integer number (600406).

2^1200811 is an apocalyptic number.

1200811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200811 is an equidigital number, since it uses as much as digits as its factorization.

1200811 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 1200811 is about 1095.8152216501. The cubic root of 1200811 is about 106.2897908634.

Adding to 1200811 its reverse (1180021), we get a palindrome (2380832).

The spelling of 1200811 in words is "one million, two hundred thousand, eight hundred eleven".