21250319226 has 64 divisors (see below), whose sum is σ = 47400059520. Its totient is φ = 6311761920.

The previous prime is 21250319221. The next prime is 21250319231. The reversal of 21250319226 is 62291305212.

It is an interprime number because it is at equal distance from previous prime (21250319221) and next prime (21250319231).

It is not an unprimeable number, because it can be changed into a prime (21250319221) 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 31 ways as a sum of consecutive naturals, for example, 4301830 + ... + 4306766.

It is an arithmetic number, because the mean of its divisors is an integer number (740625930).

Almost surely, 2^21250319226 is an apocalyptic number.

21250319226 is an abundant number, since it is smaller than the sum of its proper divisors (26149740294).

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

21250319226 is a wasteful number, since it uses less digits than its factorization.

21250319226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 21250319226 in words is "twenty-one billion, two hundred fifty million, three hundred nineteen thousand, two hundred twenty-six".