221524243672136 has 64 divisors (see below), whose sum is σ = 419882702564160. Its totient is φ = 109561050144000.

The previous prime is 221524243672129. The next prime is 221524243672157. The reversal of 221524243672136 is 631276342425122.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6488493626 + ... + 6488527766.

It is an arithmetic number, because the mean of its divisors is an integer number (6560667227565).

Almost surely, 2^{221524243672136} is an apocalyptic number.

It is an amenable number.

221524243672136 is a deficient number, since it is larger than the sum of its proper divisors (198358458892024).

221524243672136 is a wasteful number, since it uses less digits than its factorization.

221524243672136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54126 (or 54122 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 50.

The spelling of 221524243672136 in words is "two hundred twenty-one trillion, five hundred twenty-four billion, two hundred forty-three million, six hundred seventy-two thousand, one hundred thirty-six".