11821226850 has 144 divisors (see below), whose sum is σ = 32259988800. Its totient is φ = 3103056000.

The previous prime is 11821226821. The next prime is 11821226861. The reversal of 11821226850 is 5862212811.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9043897 + ... + 9045203.

It is an arithmetic number, because the mean of its divisors is an integer number (224027700).

Almost surely, 2^11821226850 is an apocalyptic number.

11821226850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11821226850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16129994400).

11821226850 is an abundant number, since it is smaller than the sum of its proper divisors (20438761950).

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

11821226850 is a wasteful number, since it uses less digits than its factorization.

11821226850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625 (or 1617 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 11821226850 in words is "eleven billion, eight hundred twenty-one million, two hundred twenty-six thousand, eight hundred fifty".