221641656256200 has 96 divisors (see below), whose sum is σ = 688883101516800. Its totient is φ = 58950121916160.

The previous prime is 221641656256193. The next prime is 221641656256243. The reversal of 221641656256200 is 2652656146122.

It is a self number, because there is not a number n which added to its sum of digits gives 221641656256200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 482019235 + ... + 482478834.

It is an arithmetic number, because the mean of its divisors is an integer number (7175865640800).

Almost surely, 2^{221641656256200} is an apocalyptic number.

221641656256200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221641656256200 is an abundant number, since it is smaller than the sum of its proper divisors (467241445260600).

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

221641656256200 is a wasteful number, since it uses less digits than its factorization.

221641656256200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964498471 (or 964498462 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 221641656256200 in words is "two hundred twenty-one trillion, six hundred forty-one billion, six hundred fifty-six million, two hundred fifty-six thousand, two hundred".