850221202249 has 16 divisors (see below), whose sum is σ = 906984440208. Its totient is φ = 794210301952.

The previous prime is 850221202241. The next prime is 850221202277. The reversal of 850221202249 is 942202122058.

It can be written as a sum of positive squares in 8 ways, for example, as 34487089849 + 815734112400 = 185707^2 + 903180^2 .

It is not a de Polignac number, because 850221202249 - 2³ = 850221202241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850221202241) 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, 12722607 + ... + 12789259.

It is an arithmetic number, because the mean of its divisors is an integer number (56686527513).

Almost surely, 2^850221202249 is an apocalyptic number.

It is an amenable number.

850221202249 is a deficient number, since it is larger than the sum of its proper divisors (56763237959).

850221202249 is a wasteful number, since it uses less digits than its factorization.

850221202249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72284.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 850221202249 in words is "eight hundred fifty billion, two hundred twenty-one million, two hundred two thousand, two hundred forty-nine".