850411020021 has 16 divisors (see below), whose sum is σ = 1137068889600. Its totient is φ = 565349104368.

The previous prime is 850411019981. The next prime is 850411020029. The reversal of 850411020021 is 120020114058.

It is not a de Polignac number, because 850411020021 - 2⁷ = 850411019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 850411019973 and 850411020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850411020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285110 + ... + 1830936.

It is an arithmetic number, because the mean of its divisors is an integer number (71066805600).

Almost surely, 2^850411020021 is an apocalyptic number.

It is an amenable number.

850411020021 is a deficient number, since it is larger than the sum of its proper divisors (286657869579).

850411020021 is a wasteful number, since it uses less digits than its factorization.

850411020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547288.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 850411020021 its reverse (120020114058), we get a palindrome (970431134079).

The spelling of 850411020021 in words is "eight hundred fifty billion, four hundred eleven million, twenty thousand, twenty-one".