1000012811 has 16 divisors (see below), whose sum is σ = 1223709120. Its totient is φ = 797660160.

The previous prime is 1000012799. The next prime is 1000012847. The reversal of 1000012811 is 1182100001.

It is a cyclic number.

It is not a de Polignac number, because 1000012811 - 2⁶ = 1000012747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000012891) 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, 36620 + ... + 57801.

It is an arithmetic number, because the mean of its divisors is an integer number (76481820).

Almost surely, 2^1000012811 is an apocalyptic number.

1000012811 is a deficient number, since it is larger than the sum of its proper divisors (223696309).

1000012811 is an equidigital number, since it uses as much as digits as its factorization.

1000012811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94534.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1000012811 is about 31622.9791607306. The cubic root of 1000012811 is about 1000.0042703151.

Adding to 1000012811 its reverse (1182100001), we get a palindrome (2182112812).

The spelling of 1000012811 in words is "one billion, twelve thousand, eight hundred eleven".