221913884808 has 540 divisors, whose sum is σ = 778234475655. Its totient is φ = 57080358720.

The previous prime is 221913884791. The next prime is 221913884833. The reversal of 221913884808 is 808488319122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

221913884808 is a `hidden beast` number, since 2 + 21 + 9 + 138 + 8 + 480 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110956942404 + 110956942404 = 333102^2 + 333102^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333102.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 2154503685 + ... + 2154503787.

Almost surely, 2^221913884808 is an apocalyptic number.

221913884808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221913884808

221913884808 is an abundant number, since it is smaller than the sum of its proper divisors (556320590847).

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

221913884808 is a wasteful number, since it uses less digits than its factorization.

221913884808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The spelling of 221913884808 in words is "two hundred twenty-one billion, nine hundred thirteen million, eight hundred eighty-four thousand, eight hundred eight".