250821099812 has 12 divisors (see below), whose sum is σ = 438972372636. Its totient is φ = 125400421920.

The previous prime is 250821099803. The next prime is 250821099829. The reversal of 250821099812 is 218990128052.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 96799387876 + 154021711936 = 311126^2 + 392456^2 .

It is a super-2 number, since 2×250821099812² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2476139 + ... + 2575442.

It is an arithmetic number, because the mean of its divisors is an integer number (36581031053).

Almost surely, 2^250821099812 is an apocalyptic number.

It is an amenable number.

250821099812 is a deficient number, since it is larger than the sum of its proper divisors (188151272824).

250821099812 is a wasteful number, since it uses less digits than its factorization.

250821099812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063998 (or 5063996 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 250821099812 in words is "two hundred fifty billion, eight hundred twenty-one million, ninety-nine thousand, eight hundred twelve".