1012206805 has 8 divisors (see below), whose sum is σ = 1240492032. Its totient is φ = 792536208.

The previous prime is 1012206781. The next prime is 1012206841. The reversal of 1012206805 is 5086022101.

1012206805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012206805 - 2¹¹ = 1012204757 is a prime.

It is a super-3 number, since 3×1012206805³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012206805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2153397 + ... + 2153866.

It is an arithmetic number, because the mean of its divisors is an integer number (155061504).

Almost surely, 2^1012206805 is an apocalyptic number.

It is an amenable number.

1012206805 is a deficient number, since it is larger than the sum of its proper divisors (228285227).

1012206805 is an equidigital number, since it uses as much as digits as its factorization.

1012206805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307315.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1012206805 is about 31815.1977048705. The cubic root of 1012206805 is about 1004.0524901394.

Adding to 1012206805 its reverse (5086022101), we get a palindrome (6098228906).

The spelling of 1012206805 in words is "one billion, twelve million, two hundred six thousand, eight hundred five".