1012021806 has 8 divisors (see below), whose sum is σ = 2024043624. Its totient is φ = 337340600.

The previous prime is 1012021793. The next prime is 1012021807. The reversal of 1012021806 is 6081202101.

1012021806 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.

1012021806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012021807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84335145 + ... + 84335156.

It is an arithmetic number, because the mean of its divisors is an integer number (253005453).

Almost surely, 2^1012021806 is an apocalyptic number.

1012021806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1012021806 is a wasteful number, since it uses less digits than its factorization.

1012021806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168670306.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1012021806 is about 31812.2901721960. The cubic root of 1012021806 is about 1003.9913168617.

Adding to 1012021806 its reverse (6081202101), we get a palindrome (7093223907).

The spelling of 1012021806 in words is "one billion, twelve million, twenty-one thousand, eight hundred six".