221500946528 has 48 divisors (see below), whose sum is σ = 459292861440. Its totient is φ = 104945149056.

The previous prime is 221500946519. The next prime is 221500946533. The reversal of 221500946528 is 825649005122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327568 + ... + 1485071.

It is an arithmetic number, because the mean of its divisors is an integer number (9568601280).

Almost surely, 2^221500946528 is an apocalyptic number.

It is an amenable number.

221500946528 is an abundant number, since it is smaller than the sum of its proper divisors (237791914912).

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

221500946528 is a wasteful number, since it uses less digits than its factorization.

221500946528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812779 (or 2812771 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 221500946528 in words is "two hundred twenty-one billion, five hundred million, nine hundred forty-six thousand, five hundred twenty-eight".